I just found this very useful free tool called BgInfo which generates dynamic background with very useful system information such as Service Pack, IP, Free Disk Space etc. This is Microsoft tool previously owned by SysInternals which is later acquired by Microsoft
Click here to get it from Microsoft Site
SysInternals have many kool tools if you want to explore. Here is list of few free system tools
Sysinternals Free Utilities
Sysinternals Suite The entire set of Sysinternals Utilities rolled up into a single download.
AccessChk v5.11 (May 16, 2013) AccessChk is a command-line tool for viewing the effective permissions on files, registry keys, services, processes, kernel objects, and more.
AccessEnum v1.32 (November 1, 2006) This simple yet powerful security tool shows you who has what access to directories, files and Registry keys on your systems. Use it to find holes in your permissions.
AdExplorer v1.44 (November 15, 2012) Active Directory Explorer is an advanced Active Directory (AD) viewer and editor.
AdInsight v1.01 (November 20, 2007) An LDAP (Light-weight Directory Access Protocol) real-time monitoring tool aimed at troubleshooting Active Directory client applications.
AdRestore v1.1 (November 1, 2006) Undelete Server 2003 Active Directory objects.
Autologon v3.01 (February 23, 2011) Bypass password screen during logon.
Autoruns v11.70 (August 1, 2013) See what programs are configured to startup automatically when your system boots and you login. Autoruns also shows you the full list of Registry and file locations where applications can configure auto-start settings.
BgInfo v4.20 (August 1, 2013) This fully-configurable program automatically generates desktop backgrounds that include important information about the system including IP addresses, computer name, network adapters, and more.
BlueScreen v3.2 (November 1, 2006) This screen saver not only accurately simulates Blue Screens, but simulated reboots as well (complete with CHKDSK), and works on Windows NT 4, Windows 2000, Windows XP, Server 2003 and Windows 95 and 98.
CacheSet v1.0 (November 1, 2006) CacheSet is a program that allows you to control the Cache Manager’s working set size using functions provided by NT. It’s compatible with all versions of NT.
ClockRes v2.0 (June 4, 2009) View the resolution of the system clock, which is also the maximum timer resolution.
Contig v1.7 (November 15, 2012) Wish you could quickly defragment your frequently used files? Use Contig to optimize individual files, or to create new files that are contiguous.
Coreinfo v3.21 (December 19, 2013) Coreinfo is a new command-line utility that shows you the mapping between logical processors and the physical processor, NUMA node, and socket on which they reside, as well as the cache’s assigned to each logical processor.
Ctrl2cap v2.0 (November 1, 2006) This is a kernel-mode driver that demonstrates keyboard input filtering just above the keyboard class driver in order to turn caps-locks into control keys. Filtering at this level allows conversion and hiding of keys before NT even “sees” them. Ctrl2cap also shows how to use NtDisplayString() to print messages to the initialization blue-screen.
DebugView v4.81 (December 4, 2012) Another first from Sysinternals: This program intercepts calls made to DbgPrint by device drivers and OutputDebugString made by Win32 programs. It allows for viewing and recording of debug session output on your local machine or across the Internet without an active debugger.
Desktops v2.0 (October 17, 2012) This new utility enables you to create up to four virtual desktops and to use a tray interface or hotkeys to preview what’s on each desktop and easily switch between them.
Disk2vhd v2.01 (January 21, 2014) Disk2vhd simplifies the migration of physical systems into virtual machines (p2v).
DiskExt v1.1 (May 14, 2007) Display volume disk-mappings.
Diskmon v2.01 (November 1, 2006) This utility captures all hard disk activity or acts like a software disk activity light in your system tray.
DiskView v2.4 (March 25, 2010) Graphical disk sector utility.
Disk Usage (DU) v1.5 (March 21, 2013) View disk usage by directory.
EFSDump v1.02 (November 1, 2006) View information for encrypted files.
FindLinks v1.0 (July 18, 2011) FindLinks reports the file index and any hard links (alternate file paths on the same volume) that exist for the specified file. A file’s data remains allocated so long as at it has at least one file name referencing it.
Handle v3.51 (January 24, 2013) This handy command-line utility will show you what files are open by which processes, and much more.
Hex2dec v1.0 (November 1, 2006) Convert hex numbers to decimal and vice versa.
Junction v1.06 (September 8, 2010) Create Win2K NTFS symbolic links.
LDMDump v1.02 (November 1, 2006) Dump the contents of the Logical Disk Manager’s on-disk database, which describes the partitioning of Windows 2000 Dynamic disks.
ListDLLs v3.1 (July 18, 2011) List all the DLLs that are currently loaded, including where they are loaded and their version numbers.
LiveKd v5.31 (December 19, 2013) Use Microsoft kernel debuggers to examine a live system.
LoadOrder v1.0 (November 1, 2006) See the order in which devices are loaded on your WinNT/2K system.
LogonSessions v1.21 (May 6, 2010) List the active logon sessions on a system.
MoveFile v1.01 (January 24, 2013) Allows you to schedule move and delete commands for the next reboot.
NTFSInfo v1.0 (November 1, 2006) Use NTFSInfo to see detailed information about NTFS volumes, including the size and location of the Master File Table (MFT) and MFT-zone, as well as the sizes of the NTFS meta-data files.
PageDefrag v2.32 (November 1, 2006) Defragment your paging files and Registry hives.
PendMoves v1.2 (February 5, 2013) Enumerate the list of file rename and delete commands that will be executed the next boot.
PipeList (November 1, 2006) Displays the named pipes on your system, including the number of maximum instances and active instances for each pipe.
PortMon v3.03 (January 12, 2012) Monitor serial and parallel port activity with this advanced monitoring tool. It knows about all standard serial and parallel IOCTLs and even shows you a portion of the data being sent and received. Version 3.x has powerful new UI enhancements and advanced filtering capabilities.
ProcDump v6.0 (May 16, 2013) This command-line utility is aimed at capturing process dumps of otherwise difficult to isolate and reproduce CPU spikes. It also serves as a general process dump creation utility and can also monitor and generate process dumps when a process has a hung window or unhandled exception.
Process Explorer v16.02 (March 7, 2014) Find out what files, registry keys and other objects processes have open, which DLLs they have loaded, and more. This uniquely powerful utility will even show you who owns each process.
Process Monitor v3.1 (March 7, 2014) Monitor file system, Registry, process, thread and DLL activity in real-time.
PsExec v2.1 (March 7, 2014) Execute processes on remote systems.
PsFile v1.02 (December 4, 2006) See what files are opened remotely.
PsGetSid v1.44 (April 28, 2010) Displays the SID of a computer or a user.
PsInfo v1.77 (April 28, 2010) Obtain information about a system.
PsKill v1.15 (June 28, 2012) Terminate local or remote processes.
PsPing v2.01 (January 29, 2014) Measure network performance.
PsList v1.3 (March 23, 2012) Show information about processes and threads.
PsLoggedOn v1.34 (April 28, 2010) Show users logged on to a system.
PsLogList v2.71 (April 28, 2010) Dump event log records.
PsPasswd v1.23 (October 17, 2012) Changes account passwords.
PsService v2.24 (April 28, 2010) View and control services.
PsShutdown v2.52 (December 4, 2006) Shuts down and optionally reboots a computer.
PsSuspend v1.06 (December 4, 2006) Suspend and resume processes.
PsTools (March 7, 2014) The PsTools suite includes command-line utilities for listing the processes running on local or remote computers, running processes remotely, rebooting computers, dumping event logs, and more.
RAMMap v1.32 (November 1, 2013) An advanced physical memory usage analysis utility that presents usage information in different ways on its several different tabs.
RegDelNull v1.10 (November 1, 2006) Scan for and delete Registry keys that contain embedded null-characters that are otherwise undeleteable by standard Registry-editing tools.
Registry Usage (RU) v1.0 (March 21, 2013) View the registry space usage for the specified registry key.
RegJump v1.01 (November 1, 2006) Jump to the registry path you specify in Regedit.
RootkitRevealer v1.71 (November 1, 2006) Scan your system for rootkit-based malware.
SDelete v1.61 (January 11, 2013) Securely overwrite your sensitive files and cleanse your free space of previously deleted files using this DoD-compliant secure delete program.
ShareEnum v1.6 (November 1, 2006) Scan file shares on your network and view their security settings to close security holes.
ShellRunas v1.01 (February 28, 2008) Launch programs as a different user via a convenient shell context-menu entry.
Sigcheck v2.03 (March 7, 2014) Dump file version information and verify that images on your system are digitally signed.
Streams v1.56 (April 27, 2007) Reveal NTFS alternate streams.
Strings v2.52 (June 20, 2013) Search for ANSI and UNICODE strings in binary images.
Sync v2.0 (November 1, 2006) Flush cached data to disk.
TCPView v3.05 (July 25, 2011) Active socket command-line viewer.
VMMap v3.11 (September 10, 2012) VMMap is a process virtual and physical memory analysis utility.
VolumeId v2.0 (November 1, 2006) Set Volume ID of FAT or NTFS drives.
Whois v1.11 (October 17, 2012) See who owns an Internet address.
WinObj v2.22 (February 14, 2011) The ultimate Object Manager namespace viewer is here.
ZoomIt v4.5 (June 20, 2013) Presentation utility for zooming and drawing on the screen.