One of the best antivirus solutions that are free, Avira AntiVir got to version 9 and it now comes with a spyware removal tool. If you’re using a paid antivirus this is not something new for you, but for a free antivirus it’s quite a nice feature.
The free version should be enough, but if you’re willing to spend $26 for the premium version, you’ll also get email scanning and a few other features.
it is very good!