That's the message I get when I install. But I don't think my new machine IS 64 bit. It's got E220 intel pentium dual core. I was never told it is 64 bit, and, even so, I read in these forums that naive melody said that doesn't mean it truly IS 64 bit, even if it had AMD's 64 bit on the front. It was too inexpensive for that, and it runs Vista Home Premium.
So, what do I use? I just uninstalled that icky McAfee.
Operating System:Windows Vista Home Premium
Product Name:ZoneAlarm Internet Security Suite