a. SpywareBlaster: http://www.javacoolsoftware.com/spywareblaster.html
b. SpywareGuard: http://www.javacoolsoftware.com/spywareguard.html
My son uses his computer for school on which we have a persistent pop-up problem, and it seems to slow it down too. The most annoying part of these pop-ups are that some of them are leading you to sites such as"Nixad.com", "nomore-ads.net", "win-fix.com, etc. We have used and/or tried AdAware, Spybot S&D, & McAfee Virus. After reading some posts added "Shoot the Messenger" to no avail. Also recently we had to do a "full" install of XP to eliminate some old partitions and its still there. (P-II 350mhz, 850mb h/d, 128ram,cd-rom, XP -Prof, AOL). Help is greatly appreciated.