Ok, I have legit version of xp. Well, a copy of a legit version of XP PRO Corperate Edition that I got from work. My cd key starts with FCKGW. I have been reading about this Devils own cd key and how its the same as mine. Does this mean that i won't be able to install the service pack?? Are all keys that start with FCKGW black-listed, or is it just certain ones?? thanks oDin.