Can anyone help in getting a card based on the OPTi Pro82C931 working on W98.

My daughter had sound working ok but whilst investigating a recent problem sound was lost and despite doing a reload of W98 I still can't get the card working. It is seen as new hardware (OPTiAudi16) but W98 doesn't recognise the drivers I downloaded from this site (although I am sure I used these before).

There the problem may be related to the fact
that when looking at System Devices I noticed that the OPTiPlu-N-PLay Sound System is shown as conflicting on IRQ3 with COM2.

Any help much appreciated as I am stuck

Chris