Best rated free antivirus program for home vista?

Could anyone suggest please the well proven and reviewed free antivirus software for vista home premium 32 bit.

Further the norton that came preloaded does not get uninstalled as it asks for the insertion of the cd that I never received!

Best rated free antivirus program for home vista?anti virus

My Personal favorite is AVG. Rock solid protection....great price of free :-). Hope this helps!!!

Download it here : http://free.grisoft.com/

Best rated free antivirus program for home vista?auto protect

The best free ones are Avast and AVG, I would recommend the second as I have tried them both and the first slowed my computer down whereas AVG did not!
Try Out Some Of These Free Anti-Viruses.

All Vista 32-Bit Compatible.

I've Listed The Name, Download Link And Detection Rate To Make

Your Life Easier.

Avira AntiVir PersonalEdition Classic:

http://free-av.com/

94.26% Detection rate

avast! Home Edition:

http://avast.com/eng/download-avast-home...

87.46% Detection Rate

AVG Free Edition:

http://free.grisoft.com/doc/downloads-pr...

82.82%% Detection Rate

Good Luck ! :)
Ist download this to remove Norton http://service1.symantec.com/SUPPORT/tsg...
AVG FREE for Vista

and get the norton unistall tool

http://service1.symantec.com/SUPPORT/tsg...
avast or avg are the best free ones.
Avast is free and it works. It didn't slow down my comp and it reports viruses faster than avg at VirusTotal (a third party website).