Always remember, and never forget...
That's basically it. I am so glad I stopped downloading stuff. But some tips:
TrueCrypt (****) - "TrueCrypt is a software system for establishing and maintaining an on-the-fly-encrypted drive." Makes my private data private. Good when using external drives.
PeerGuardian (*)- "IP blocker for Windows. PeerGuardian 2 integrates support for multiple lists, list editing, automatic updates, and blocking all of IPv4 (TCP, UDP, ICMP, etc), making it the safest and easiest way to protect your privacy on P2P." I don't even file share, but I have it to block my school when they start trying to access my computers in the school network.- And finally get some sort of hard drive eraser that will perform multiple passes. Once is never enough. Three passes is DOD standard. Seven passes is NSA standard. Eight passes is good. Thirty-five, the Gutmann standard is overkill but for sure.
Once you erase your hard drive I recommend you encrypt it and put all data you want secure safely in there.
UPDATE: I'll be damned, CCleaner supports the Gutmann standard.