May I give a suggestion?
Try either (I think they are better than Ad-aware 6 Build 181):

SpywareBlaster 2.6
http://www.wilders.org/HTMLobj-1605/spywareblastersetup.exe

SpyBot 1.2
ftp://ftp.download.com/pub/win95/internet/spybotsd12.exe

They run smotly on the system (XP Pro) and have much more features than the free version of Ad-aware. By the way, they are free too! :wink: