Output troubles...

Reposted this in its own thread so as not to hijack someone else's issue.

Having an issue using Guitar Rig or FL Studio. In FL when I set drivers to ASIO it defaults to 1-2 meaning I can only listen on the headphone channel (as I have nothing else I can plug into that channel). If I set the out to 5-6 it changes the driver in FL to direct sound which gives me horrible latency. With Guitar Rig I cant seem to find a way to change the out to anything other than the main 1-2 at all. My monitors have either RCA, digital or co ax inputs (Roland MA-15D) so my only choice is channel 5-6. My first ever home studio setup so it's highly likely I am missing something obvious. Any wiser folks have some advice?