my computer was custom built so all parts are random.. mainly ASUS however the sound is intergrated onto my motherboard which is on an Asus P5Q motherboard. mainly thou i belief my question is related to vista sound settings.. so i can't see u needing any specs. so i'll repeat..
my only way to change options for my "Digital Output(RCA)" is under the "Default Setting" tab an include a list of 16 or 24bit sound with different frequencys. however all options are 2 Channel. right now it is on "2-Channel 24-bit 192,000hz" i can't figure out how to enable a "Speaker Setting" tab or how to enlarge the list to a 7.1 option.. its digital output so it should work, but all im gettign is an analog output