Sound Max V4.0

I have Intel P4 HT motherboard.This has soundmax 4.0 chip attached.I am now having trouble to record messgaes and speak over the IP telephony.This problem I am facing for the last couple of days.I tried installing new drivers from Intel website.But didnt help.So went back to old set of drivers.Any suggestions as to how I can get back to the earlier working status.I have Windows XP Professional