Is there any type of software I can buy that will detect and erase bugs from my computer and clean it out?

Answer 1

The free programs listed above are quite good.

The best all-in-one spyware/malware cleaner is webroot spysweeper, which is free to try and costs $29.95 for the full version.

Otherwise AVG Anti-virus, Spybot seach & destroy and Ad-Aware SE are quite effective.

Answer 2

Free Anti-virus:
http://free.grisoft.com/doc/1
http://www.avast.com/eng/avast_4_home.html
http://www.free-av.com/
http://www.trendmicro.com/hc_intro/default.asp
http://www.superantispyware.com/

Other Anti-virus help:
http://www.f-secure.com/v-descs/
http://www.cert.org/other_sources/viruses.html

Free Online Virus Checks:
http://onlinescan.avast.com/
http://www.avast.com/eng/avast-virus-cleaner.html
http://housecall.trendmicro.com/
http://support.f-secure.com/enu/home/ols.shtml
http://www.kaspersky.com/virusscanner
http://us.mcafee.com/root/mfs/default.asp

Single file Scanner:
http://www.kaspersky.com/scanforvirus.html

Free Anti-Spyware:
http://www.spywareguide.com/onlinescan.php
http://www.safer-networking.org/
http://free.grisoft.com/doc/ewido-anti-spyware-free/lng/us/tpl/v5
http://www.download.com/Ad-Aware-SE-Personal-Edition/3000-8022_4-10399602.html?tag=lst-0-1
http://www.windowsecurity.com/trojanscan/