F-Secure Anti Virus Question

I've been looking at using this as my anti virus software. However, my research tells me that it doesn't get along well at all with Zone Alarm Firewall.

So much so that it will refuse to install as long as ZA is installed. I also found out that ZA itself won't install if FS is installed, either.

Anyone reading this using F-Secure 2006 or 2007? If so, what are you doing for a firewall solution if you can't use it and ZA, short of using F-A's own firewall software in their higher up package?

Anyone?