At work so can't really get the model number till tonight. I run AVG, Spybot and Ad-aware every month or so with no real problems detected.
5Mb/s is the fastest I can get in my area(read as boonies) with unlimited data and a low latency. My son uses Xbox and it seems the sat companies are to slow for that.
skeeter
Also, like PP said, please run MBAM to make sure that you are indeed clean of infections. From there, we can help troubleshoot some more.