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you might just want to buy some good antivirus and antispyware programs. For antispyware, try [url=http://www.microsoft.com/athome/security/spyware/software/default.mspx:0fcd4]Microsoft Windows defender[/url:0fcd4] first, it's free. If that doesn't work, try [url=http://www.webroot.com/land/freescan_ent.php?rc=2180&ac=420:0fcd4]webroot Spysweeper[/url:0fcd4], it's supposed to be one of the best and it works great for me. For antivirus, I recommend [url=http://www.kasperskylabs.com:0fcd4]Kaspersky.[/url:0fcd4]

Honestly, I think shelling out some cash is worth securing your computer.