Here is a giant list of Freeware Software you could use on your computer.
3D Graphics:
Anim8or - http://www.anim8or.com/
Blender - http://www.blender3d.org/
gmax - http://www.discreet.com/products/gmax/
Maya Personal Learning Ed. - http://www.alias.com/eng/products-services…ple/index.shtml
Now3D - http://digilander.libero.it/giulios/Eng/homepage.htm
SOFTIMAGE|XSI EXP - http://www.softimage.com/products/exp/v3/
Anti-Virus:
AntiVir - http://www.free-av.com/
Avast - http://www.avast.com/i_idt_1018.html
AVG - http://www.grisoft.com/
Anti Spyware:
Ad-aware - http://www.lavasoft.de/software/adaware/
CWShredder - http://www.download.com/CWShredder/3000-8022_4-10301586.html
Diet K - http://www.dietk.com/
HiJackThis - http://www.spychecker.com/program/hijackthis.html
SpyBot Search & Destroy - http://spybot.safer-networking.de/
SpywareBlaster - http://www.javacoolsoftware.com/spywareblaster.html
SpywareGuard - [...]