Front headset and speakers at the same time?

Hey all!

I am trying to get my headset (which plugs into the Front-Green-Out) to work along side of my speakers (which plug into my Rear-Green-Out).

Both are being recognised and both work, but not at the same time. That's because in the screen where you manage your Audiodevices you can only have 1 "standarddevice", which it uses to play the audio.

Is there any way to have more than 1 standarddevice? (or another way to make both work at the same time).

EDIT:
By the way, for anyone using the same motherboard as me: Asus is not supporting it anymore =/. I use the P5K-EPU sounddrivers. Also, if you want the front jacks to work you have to set them in the BIOS to AC97, not HD-audio.

I know on mine when I plug into the front panel it disables my rear inputs. I don't think there is a way to do that using the same driver. What I do though is use a sound card for my speakers/monitors and use the onboard for my headset. I have WMP set to my sound card so I can listen to DVD/music through my monitors while gaming through my headset simultaneously. Helps when the Mrs is scrapbooking and wants to listen to music.

Not sure if this will work but have you tried setting it up as a 4 speaker system using the headset as the front speakers?