Hey all, im trying to install XP Media Center Edition 2005. I have used both CD 1 and CD 2 to clean install and everythings installed correctly. I am trying to activate with the key from the COA on my computer (NEC branded), and im using it with official Microsoft Windows installation CDs (not official NEC discs) and i am being told that the key i have entered is invalid. Any help? Rep+ and thanks+ for help guys, much appreciated!