I am trying to configure sound in backtrack 3 final .. but failing regularly

Please help!

My Hardware configurations is as Follows

1> Motherboard Intel D946GZI integrated sound system SIGMATEL sound hardware with STAC227 driver

This what i found in my Sound Configuration box

Audio Device:
0: STAC92xx ANALOG (DUPLEX)

Synth Device:NOT ENABLED IN CONFIG

MIDI Device: NOT ENABLED IN CONFIG

Timers:

7: system timer

Mixers:
0:Sigma Tel STAC9227


Though it has found my hardware .. but as it says Synth Device and Midi Device Not enabled in COnfig

How to Enable it and which from which config