If you were willing to start again, then keep ad-aware personal and uninstall everything else. incidentally, do you not have any firewall software, or are you just using the default windows app?
then install AVG Free for virus protection and zonealarm firewall or kerio personal firewall.
I bought the whole norton internet security program and got so sick of it that i scrapped it with 2/3 of the subscription left. So in my opinion norton sucks. Try using "crap cleaner", it cleans your registry and the spyware, malware, and other useless stuff from your system. As for the antivirus, I use avast but thats so far the only thing i can find that will work on a 64 bit system.