What is a good anti-virus that can be used in 3 computers?

and its good.

What is a good anti-virus that can be used in 3 computers?nortonantivirus

AVG AntiVirus rocks..and it's free from www.download.com (SAFE)!

What is a good anti-virus that can be used in 3 computers?spyware

Something free like Avast would do the trick, as you would not have to pay for additional licenses.
Free Anti-virus:

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

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

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

http://www.trendmicro.com/hc_intro/defau...

http://www.superantispyware.com/

Other Anti-virus help:

http://www.f-secure.com/v-descs/

http://www.cert.org/other_sources/viruse...

Free Online Virus Checks:

http://onlinescan.avast.com/

http://www.avast.com/eng/avast-virus-cle...

http://housecall.trendmicro.com/

http://support.f-secure.com/enu/home/ols...

http://www.kaspersky.com/virusscanner

http://us.mcafee.com/root/mfs/default.as...
computer nerd recommended this but I have a mac- Spybot Search and Destroy --its free

Remembered the website: http://downloads.zdnet.com

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All Antiviruses are Good....But See to it that you Buy an MULTI USER Pack....This will Help you with Security on all Three Machines
My brother works for a large computer software company, he recommends McAffe, that is what his company uses. I have used it for years, and have had no problems.