protect against keyloggers etc

What are the best tools to use for making sure my computer isn't being used by a sneaky hacker. After reading about what happened to Half Life 2, I'm curious what I can use to make sure no hidden processes are on my machine logging keystrokes, secretly ftp'ing logfiles and Word docs, etc.
ryanstaAsked:
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ghanaCommented:
There are different types of applications that will help you to identify and remove those processes:
Most known are antivirus programs and personal firewalls. SpyBot and Ad-Aware are antispy and anti-adware software and are also able to detect some keyloggers.

SpyBot: http://beam.to/spybotsd
Ad-Aware: http://www.lavasoftusa.com/

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ryanstaAuthor Commented:
spybot... cool tool
ghanaCommented:
Yes it is. - Glad I could help you. Thanks for your rating!
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