2 L4D servers on same machine

[ZerXes]

Hi!
Im trying to host 2 L4D servers on my new server running Ubuntu, runs on a Core 2 quad witch 8gb of ram, using a VM for the L4D server...

Im starting the server with: screen -A -m -d -S l4d-server ./srcds_run -console -game l4d +map l4d_vs_hospital01_apartment +maxplayers 14 -autoupdate

to get screen and such... now how do I do to start server 2 on the same VM but I want server 2 to use a diffrent server.cfg...
is this possible without make 2 l4d dir's?

thanx