Problems installing XP Audio drivers for Dell Inspiron 1525

I need help. I downgraded my Dell Inspiron 1525 system using windows XP professional

I tried installing the audio driver (1525 SIGMATEL STAC 92XX C-Major HD ) from dell 1525 xp driver list and I got the following message:

ExitError:Error=This system does not support the driver you are attempting to install.

Any suggestions or leads would be greatly appreciated.

Thanks

Joe