I recently installed TrendMicro ISS 2009 on 3 versions of Win 7 and on all 3 the firewall is non-functional, it takes forever to update and upon a restart, forever to load and then half the time does not function. Their support will not help since I am on a Beta build I think this ISS would not be a good choice. So back to Avast Free

Trend is not one of the listed beta vendors. Good idea.

I cannot find any firewall that will work on Win 7 Ultimate 64 Bit.

http://free.avg.com/is where I got my virus and firewall plus windows firewall built into the windows7 and defender seems to work well. Have a good one.