open notepad dump the following lines into it and save it with the name OEMINFO.INI in the

c:\windows\system32 directory:

[General]Manufacturer=Your Name
HereModel=Your Model
Here[Support Information]Line1=Your Name HereLine2=Your Address HereLine3=Your Email Address Here
Save the file, then make a right click on my computer select properties, in the general tab a button will be highlighted (support information) make a click on it, you will be able to see the changes.Now if you want to display some more information then simply increase the line in the file.
eg: Line4=Your Working Hours Here