My Mbox works fine on the SiS chipset system i have?
 

Just thought you should know, as a recent buyer of the Mbox, it works nicely on my computer which has an SiS chipset and no hardware base soundcard. I've recorded lots of tracks and mixed them, and bounced etc. Really kewl little unit, brought it to my friends studio and it also works nice with Cubase SX as well.

Why does the software in the Protools Le version look so cheap? hehe. obviously superior software doesn't need asthetics to be good. Have fun.