I'm experimenting with windows 7 along with other operating systems. At the moment I'm using windows 7. A few things interest me, but right now I'm contemplating extra security... more firewalls more.... ^_^! What extra firewalls would a windows 7 64-bit home edition with 4 gigs of ram, be compatible with? I'm not interested in caging virus' that I contract. I simply want to stop them in their tracks.