Onboard Mic Problems

With customers trying voice software etc..
lately I've been running into a microphone problem when the SoundCard is integrated on the motherboard. The one I'm trying to get working now is on the BCM Socket 7 IN530 board and is the ESS 1938 (SOLO-1) chipset. Sound works fine, but microphone has no input. Any fixes?? Has anyone else had this problem??
HELP Please

[This message has been edited by RGK01 (edited February 05, 2000).]

[This message has been edited by RGK01 (edited February 06, 2000).]