I thought I would list some programs and a website that you can find via the internet and download to help with the running of your computer, all are freeware or have free versions available. All can be found online by doing a search, I just give you the name, you look it up :)
( Remember that you should run only one firewall and preferably only one antivirus program at one time to prevent conflicts, though you can run online safety scanners whilst running most programs including antivirus programs without problems occuring ).
Antivir antivirus personal edition
Spyware Terminator - free antispyware with real time shield, personal choice of having clamwin antivirus inclusive.
Spybot Search and Destroy - free antispyware and prevention
Spyware Blaster - spyware prevention
windows defender - free antispyware ( microsoft )
Ad-aware SE personal - free antispyware
CWshredder - finds and cleans certain hard to get rid of spyware off your computer
Website - Windows live onecare safety scanner. ( Run regularily a must have website )