What is the best anti-malware program? You'll get a lot of answers on this, but I'm personally a big fan of using multiple products, especially if they are free. Try out the free program from Emsisoft called A-Square Free. You can download it from cnet.com and get their review as well here.
One caveat, use this program IN ADDITION to whatever other anti-virus package you are using.
Here is some information from a Chinese site that tests security programs:
Again the independent testing organisation PC Security Labs reviewed 30 famous security products, including Emsisoft Anti-Malware. The platform for this test was Windows XP SP3 Professional Simplified Chinese, comparing the On-demand scanners of the contestants with default settings. 1004 samples were used this time, representing the top threats in China.
For the first time since a longer period, Emsisoft Anti-Malware did not place first in a detection test, but second out of 30 is still a very good result.
The top 15: