To insert Processor Manufacturer and Model

Open "c:\windows\system\Oeninfo.ini" file with notepad or any test editor.
Type following in the file:
_________________________
[general]
Manufacturer= Intel®
Model= Pentium® 4
_________________________

(To type "®" press 0,1,7,4 one after another while holding alt key)

Replace Intel® and Pentium® 4 by your Model and Processor
Save the file. All done!
Now right click on "My Computer" Icon and left click "Properties"

(NOTE: It is necessary to backup your original oemlogo.bmp or oeminfo.ini if they exist.)