Antivirus and Vista?

I came across a good-rated free Antivirus (AOL) recently. Can I download it to my PC on windows Vista OS? My PC came with installed Norton AV which expired a few days ago. I've kept the PC off the internet until Iam sure its protected.

What is this Mozilla firefox software? an AV?

Answers will be appreciated.

Antivirus and Vista?adware remover

i want to download Vista..But is it free? i need a link if it is!! i seen it on my mate's and i love it!

Antivirus and Vista?antivirus protection

Firefox is just a different web browser.

You can download one of the following AV products to your desktop first. Then remove Norton (Uninstaller below). Then complete the new AV installation.They are free and work with Vista.

AVG 7.5 AntiVirus (Vista Compatible)

http://free.grisoft.com/doc/1

Avast Home Antivirus (Vista Compatible)

http://www.avast.com/eng/avast_4_home.ht...

AntiVir PE (Vista Compatible)

http://www.free-av.com/

( Note: Only use one anti-virus product. Running more than one can cause conflicts thus rendering each ineffective.

http://service1.symantec.com/SUPPORT/nav... )

Norton Removal Tool

http://service1.symantec.com/SUPPORT/tsg...
used Avast for years. set it and forget it ! Vista eats up a WHOLE lotta resources ! you'll need a new puter to run this baby !