I've been running the trial version for 2 days now. I really haven't seen any difference when I'm using my laptop broadband card or WIFI in the UA RCC. I'm connected to a hotel network right now, and it seems to be blocking a bunch of minor incoming pings.

I'm primarily concerned with incoming connections, and so far, it seems that Vista does a surprisingly good job; I haven't seen ZoneAlarm do anything that Vista can't do. Anyway, it's still too early to say, but I'll keep evaluating the software. Thanks!