[CentOS] mailman on CentOS with multiple virtual hosts

Hello,
This isn't exactly CentOS specific, but it does reference the CentOS
way of doing things, so offlist replies might be better.
I'm running a CentOS 5.4 server with postfix as MTA with virtual
mailbox domains. I have set up a mailing list server
lists.example1.com using apache virtual hosts and the mailman rpm. Now
i want to add a second one call it lists.example2.com and am not sure
how to pull this off. If anyone has a multiple virtual host setup i'd
be interested.
Thanks.
Dave.