Hi, Dottie.  I've used AVG for years (with Windows XP) and have never had a problem.  My husband must use McAfee due to his work protocol and has complained of some programs not being compatible with it.  Other than that, I don't think there is much difference.  I use the free version of AVG and it has protected my computer just fine.
 
April> Date: Thu, 16 Aug 2007 22:39:12 -0400> From: [log in to unmask]> Subject: [PCSOFT] McAfee vs AVG> To: [log in to unmask]> > I currently have McAfee as my virus protection but have been reading and hearing good things about AVG. I am considering uninstalling McAfee and purchasing AVG in its stead.> I would appreciate any suggestions as to whether this would be a good decision on my part.> > I have Windows XP and my computer is used strictly for home use. > > Thank you.> Dottie Hoch> > The NOSPIN Group has added a new feature on our website,> web based bulletinboard for questions and answers:> Visit our sister website at http://nospin.com
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