There is a free program (for personal use) called Secunia PSI which scans your computer and tells you which are insecure and how to fix them. Normally its just a simple update to the latest version.

http://secunia.com/vulnerability_scanning/personal/

I first heard of it from PC Magazine and now I recommend it to all Windows users. It is a pretty handy program.

Thought I should share this with the community if people haven't heard. They are also looking for help translating.

Help Translating link:
http://secunia.com/vulnerability_scanning/personal/psi_translation_credits/

PC Magazine link: http://blogs.pcmag.com/securitywatch/2009/06/new_secunia_psi_version_adds_b.php