Xena, Most ISP provides antivirus for free. Check with your ISP. If you cannot get antivirus from your ISP there are some online virus scanners, which will scan your computer for free but they are not as effective. Here is one - http://housecall.trendmicro.com/ You can find more on the net if you search but the best ones out there are Norton and Mcafee (not free.) I can vouch for them. Good luck. -Shiv