two soundcards and poor sound quality
 

i have two soundcards...one on board and a turtle beach santa cruz...i've disabled the onboard soundcard through the bios and only use the turtle beach santacruz...my problem is the sound quality is very poor and soft

when i look under mandrake control center and then hardware...it lists both..crystal clear soundfusion audio accelerator and also apollo super ac97/audio

should i remobe the apollo super ac97/audio? and how would i do this? do you think that will solve my audio problems?