you can always download updates from Dell. I don't know if you can transfer oem licensing, i think not. I know the full version of vista can be transfered. This was a big debate when it was released. you might want to check with...
I figured I would post here before putting the below on ebay:
GeForce 7950 GX2 - Dell brand – pulled from XPS 710 – 1 month old
BIOS version: 18.104.22.168.15 – Rev A01 – great card – just wanted 8800GTX
if you are not in a hurry, I will be posting a one month old t2600 pulled from my d820 in the classified section among other things.
sorry missread the post, thought you were looking for a processor..,