Unfortunately there are many bogus or poorly written antispyware software packages out there. 

Some of them even require an annual subscription fee in $US for ongoing "protection", while happily inviting trojan horses, keystroke loggers and invitations to hackers into your PC.  So here is the top ten list of rogue antispyware sites for 2005. You may have even downloaded one of these yourself:

1. Spyware Bomber
2. Slimshield and Winhound Spyware Remover
3. WinAntiVirus and WinAntiSpyware 2005
4. SpywareNo and SpyDemolisher
5. RazerSpyware
6. Spy Trooper
7. WorldAntiSpy
8. PSGuard
9. SpySherrif
10. SpyAxe

Special mention goes to VirtualBouncer/AdDestroyer which has gone undetected for 2.5 years....

For a list of reputable and useful software, including antispyware software, just follow this link: http://www.pcsupportnz.com/Links.html