Trend Micro should be coming out with versions compatible both 32/64 bit versions of Vista. They are finishing up their beta for PC-Cillin 2007 and it should be released soon. Existing licenses of PC-Cillin can be used with the Vista version. I recently bought mine PCC2k7 at $49 for 3 licenses.
Addendum: Just noticed that its already out -
http://www.trendmicro.com/en/product...quirements.htm. I will be dumping AVG and migrating my existing license to Trend Micro this evening
