You're not alone, Jon Merin had problems, too. Works fine on my Fujitsu Lifebook - installed drivers and it was ready to go. Are you trying to use the ASIO driver in Wave Lab? If so, try the WDM. I think there is a bug in Wave Lab 5 that causes problems when using ASIO - I think there's a fix for it, but I haven't looked for it.
The problem I have is that I don't think its "bit-perfect". I've only run one test and it failed. Right after I got the Audigy card I got my PDAudio rig working so it was a moot point because I don't record on my laptop anymore. I still use it for headphone playback - sounds real nice for 24bit, supports 96k (VxPocket doesn't), and is very compact compared to using one of the external boxes.