dont forget to check the downloads area of this site ive found quite a few useful tools that i now use on my machine ,ie password generators, intrusion detects , ect but your best bet is to find a local security expert to securely erase your hard drive, reinstall the operating system and lock your system down ,ie turning off unneeded services, using the group policy editor to put into place security protocol and setting up any needed software good luck i hope this helps