Saphire;
You can google the found malwares to see what each do. It seems the second and third could be responsible for what you experienced. Check this link or likewise:
2o7.net cookie
Among the suggestions for spyware your best bet are:
Spybot
Adaware
Both free to use. I can't live or leave pc without these 2 that have saved a lot of trouble in past. BTW you need to have both as they are complimentary to one another, finding the malwares that the other one wont recognize.
Having that said, remember, spayware recognition softwares are very different from antivirus softwares so you need both of them separately and need to run them periodically that way. You have your antivirus so I wont get even there.
Well still you are not completely secure. That is missing the 3rd part. A very important part indeed, which is a firewall. You need this to allow what comes in and what goes out. In other word, in particular, nothing goes out without your knowledge.
"ZoneAlarm"
is the king of this part. Beware that this can be very distracting when run at full secure way, asking you every thing for being safe after an "Enter" bottom is pushed.
After all these if you need my advise. Have the general precautions, the common sense ones, all the time. Have a whore PC (Excuse my language) that is used for any thing virtually and gets reformatted and reinstall with OS etc once in while. This assures a very fast PC all the time, you disappoint a lot of potential hackers and cookie makers. Then another one for your important stuff, paying bills, buying on line, etc. Make sure Chris is not hearing this or I can not play anymore Mac Joke with him, I use a mac for this part. This one never surfs the web for fun or by anyone else (Hopefully as teenagers are sort of creatures that can not be thought at home and I have one).
Well to sum up what you are still missing is the firewall.
Windows Vista has made a lot of security issues integrated and is told to be a lot harder to get into. So may be you want to have some plan for near to mid-far future.
Hope this helped.