Not sure about this built on SB card, as I have never used a laptop with this.
You can Purchase a Notebook Sound card, that is PCMCIA, we have used 2 in the past that sounded great.
The two cards we have used are the Echo Indigo DJ card and the Sound Blaster Audigy ZS 2.
You can read about the Echo Indigo card at:
http://www.echoaudio.com/Products/Ca...goDJ/index.php
You can read about the Sound Blaster card at:
http://www.soundblaster.com/products...&product=10769
Hope this helps.