Mining with a Radeon 7950 and a 6870 on one computer (Win 7)

Hello everyone,

I have recently started mining again and would like to take advantage of the two graphics cards I have acquired in the past few months.
Does anyone know how to configure these cards to mine at the same time on my home rig?

I have been using guiminer(yeah I know but its easy and took less than 5 minutes to configure) with my 7950 and been getting relatively good results (~420-450mh/s) but would like to know if anyone out there knows how to add my 6870 to my mining rig. The main card is my 7950 and it is also running my dual displays.

However, since I installed my 6870, guiminer doesn't launch and just hangs there in the system tray (windows 7 ultimate) but never actually launches. Any help would be greatly appreciated.

Anyone know why my diablominer just crashes when I run it, even as administrator? I have one monitor connected to each card and my control panel detects them but still nothing so far (even with guiminer).
Does anyone know how to configure my bitclockers account with bfgminer? Nothing seems to be working for me. Searching hasnt helped much.

Thanks!