You will need two different types of software, these programs are called Anti-Virus and Anti-Spyware. Here's a list of the best PAID and FREE versions of Anti-Virus(most important)
PAID (best to worst)
Now time for the best FREE versions...
1. Avira Antivir.
3. Pc Tools Anti-Virus.
Now time for the best Spyware removal tools, none of these are paid for, they are all FREE!
1. Malewarebytes Anti-Malware (pro edition is great)
3. Spybot-Search and Destroy.
4. Pc tools Threatfire (not complete though)
Here are the links to the home page for each...
AVG (pro only): http://www.avg.com/
Pc Tools: www.pctools.com/free-antivirus/
Super Anti Spyware: www.superantispyware.com/
Edited by Heafy, 19 August 2009 - 07:03 AM.