Thanks To You Dedicated Uber-geeks!

I recently found this forum after stumbling on HiJackThis while trying to ditch the gremlins from my new XP. One thread posted an entire page faster than I could read it. I am amazed at the accessibility of 'free' help on the this site, the politeness of everyone involved, and the depth of knowledge that is accumulated here. I'm sure I'll be sent back here more than once by the a-holes with nothing better to do. Thank you so much for being here. Question: Where could I go to check out some of the .dll warnings I get from my Anti-Vir scans, some seem a bit suspicious.? I have a ludricous list of security programs referred by many a forum and site but I still live in fear that some $%@& is going to use me for a virus/spam sender without my knowledge. Bad enough to be hit, worse to be part of the problem.