How can I kill some viruses malware, adware, spyware, viruses etc.?

I used Spybot: Search & Destroy but it doesn't seem to be making any progress. I used Spyware Blaster but it says my computer has no spyware. My mother won't let me download other a href="http://www.javacoolsoftware.com/" rel="nofollow"http://www.javacoolsoftware.com//a items. So is there anything that can delete all those bugs? Without buying? (Downloading from another site is okay) Can you find a download site that deletes bugs? (This needs to be the real version of the download) Please, no torrents. Thanks for yor help!!!