l have obtained a copy of windows xp professional sp2 that is already fully activated and does not require on line activation. l have installed this on about 20 computers which are all on the net and there has been no problems with microsoft updates or anything. This copy is for corporate users only so it tells me on the front of the disk. l am new to all of this and would like to know why Microsoft would put out such a disk. Regards Riverland.