both are try before you buy...altho i dont know too much about them, they've done what i paid them to do...so no worries here(might i add internet security software like norton internet security pro?) here are the links for spywareblaster, spy killer, and trial software from symantec (i havent figured out the correct way to pronounce that yet)
http://www.javacoolsoftware.com/downloads.html
http://www.spy-killer.com/
http://nct.symantecstore.com/0001/
n-joie