AVG Anti virus - Free Anti virus http://free.grisoft.com

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Zone Alarm - Free Firewall

Free firewall with an easy to configure interface http://www.zonelabs.com

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Utility Software

Free CD / DVD Burning Software http://www.cdburner.se

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Burning Blue Ray DVD's and Dual Layer disks

ImgBurn is a lightweight CD / DVD / HD DVD / Blu-ray burning application that everyone should have in their toolkit!
http://www.imgburn.com/

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Watching DVD Movies on your PC

Simply the best free DVD Player on the market, no need for expensive players such as Power DVD, this works with Vista Business as well as XP

http://www.avsmedia.com/DVDPlayer/index.aspx