OEM Windows Showing Manufacturer

I got an oem copy of Windows XP Home as i wanted to reformat my PC.
During the installation it never asked for my licence key, although now it keeps asking for me to activate, so im guessing i put the key in then.
But when i go to system info in my computer it shows a logo of fujitsu systems even though in dxdiag it shows the manufacture being OEM, which is what i want.
I dont have any other copies of home as i lost my original, any way to get rid of this fuji thing? And will this effect my activation and licence key?
Cheers

 

Think iv found out, you can delete the info in a notepad file in system32 and also a .bmp file.
Also i can put my license key i nthe activation now, which should be ok.

Is this everything?