SoundMax audio card is a VALID card. It is used in some models of the Vaio line.
You model number appears NOT to be correct. Vaio model numbers begin with a 3 letter designation and then the model number. It would help if you post the correct model number.
Perhaps you can post a copy of your DirecTX file. Here is a link about how to do it:
http://forum.mtu.com/showthread.php?threadid=322
Jon