MatroxG400TV and PinnacleDV500 - HOW ?

Im a newbe and I have this problem :

How I can use an external Monitor with 3DstudioMax R3 (standalone) with a MatroxG400TV and, in the same PC, edit with Prem 6.02 with Pinnacle’s DV500 - which has his own breakoutbox to an external
TV Monitor (functioning).

Anybody did an experience like this ?