i couldnt install sp2 ooff the site coz it kept sayin the clack on my computer was wrong and couldnt install untill it has correct time and dat, so i ordered it for free and they sent it me on disk, it dont slow down my comp any and is rather usefull for updates and so on...
it was on my win XP pro disc, I had no choice... all i know is it made me DL a new set of drivers for m wireless router in order to use it.(comp kept on restarting and it was a windows error)