Basic Necessities

AVG AntiVirus - FREE Download
SpyBot AntiSpyware -   FREE Download
ZoneAlarm Firewall - FREE Download
C-Cleaner - FREE Download

Other Necessities

Avira AntiVirus
Comodo Firewall 3.0
TrueCrypt
Mozilla Lightning - A calendar add-on to T-bird e-mail client
Foxit Reader - An Adobe Reader replacement
Audacity - Free Audio editor and recorder
Wavosaur - Free audio editor with VST and ASIO support
Lame encoder - necessary for both Audacity and Wavosaur
Pidgin - A multi-protocol instant messaging client

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For instruction on how to install the Basic Necessities above and effectively maintain your computer, click here.