Error after installation of Adobe Audition 3

Hi Experts! I need help with my recently installed Adobe Audition 3.0.1. I always get an error "can't find a supported audio device." I am running an HP desktop PC with i5 processor and runs Windows Vista Home Premium 32-Bit OS. Is there a conflict between my sound card and Audition 3.0.1? Does my sound card recognize Audition 3.0.1? Can anyone please send me some suggestions? Thank you.
