Enable / Disable Task Manager

There is a registry hack to enable or disable Task Manager.
Hive: HKEY_CURRENT_USER Key: Software\Microsoft\Windows\CurrentVersion\Policies\System Name: DisableTaskMgr Type: REG_DWORDValue: 1=Enable this key, that is DISABLE TaskManagerValue: 0=Disable this key, that is Don’t Disable, Enable TaskManager.
If you are an Administrator you can consider  using Group Policy Editor. For that,

Click Start
Click Run
Enter gpedit.msc in the Open box and [...]

A Cool Trick – Change your PC Processor

This trick is really cool !
Goto START>RUN>type REGEDIT
Then goto HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor
On right hand side double click on processorNameString and write what ever you want.
Now check for the modified information in Computer Properties.