This program comes highly recommended from Consultsteimel.  I use the free version if you think you need the pro version by all means get it.  The free version works great, download it, update, run it and it gets rid of anything nasty.  The full version comes with real time protection.  I have a full time antivirus that takes care of that.  While most antivirus programs don't deal with malware all that well, i don't want to have more then 1 program scanning my active documents.

Malwarebytes' Anti-Malware   

From malware bytes.com

Have you ever considered what makes an anti-malware application effective? We at Malwarebytes have created an easy-to-use, simple, and effective anti-malware application. Whether you know it or not your computer is always at risk of becoming infected with viruses, worms, trojans, rootkits, dialers, spyware, and malware that are constantly evolving and becoming harder to detect and remove. Only the most sophisticated anti-malware techniques can detect and remove these malicious programs from your computer.

Malwarebytes' Anti-Malware is considered to be the next step in the detection and removal of malware. In our product we have compiled a number of new technologies that are designed to quickly detect, destroy, and prevent malware. Malwarebytes' Anti-Malware can detect and remove malware that even the most well known anti-virus and anti-malware applications fail to detect. Malwarebytes' Anti-Malware monitors every process and stops malicious processes before they even start. The Realtime Protection Module uses our advanced heuristic scanning technology which monitors your system to keep it safe and secure. In addition, we have implemented a threats center which will allow you to keep up to date with the latest malware threats.

Activating the full version unlocks realtime protection, scheduled scanning, and scheduled updating. For consumers and personal use, it is a one time fee of $24.95. For corporate and business customers, annual licenses are required, please see our Corporate Licensing program.

http://www.malwarebytes.org/mbam.php