go here http://www.tldp.org/HOWTO/Sound-HOWTO/x96.html
look for your card and/or chipset (if known). If it isn't there it may not be officially supported for one reason or another.
For instance, yesterday I was going to buy one of two cards from Creative Labs: the Soundblaster Live! or the Audigy. Using the above site I saw that the more expensive Audigy card was NOT supported. Too bad, 'cause that was the one I wanted more, but I avoided an expensive mistake.
I hope your card is listed. If it is not I hope you are a profficient programmer.