I've downloaded ad-aware 2007 twice and it won't start up - get the following:

Component
TTimer


Access violation at address 004033C3 in module Ad-Aware 2007.exe Write of address 00000008


and am told to notify customer support but that hasn't been easy!!

Only a guess but do you have Spybot & Destroy installed? If so, you have TeaTimer activated in that program.