Well, I have no personal experiences with that one, but there seems to be
a dedicated home pages
for the SpeedTouch USB, so it looks quite promising.
Who knows, some things may have changed in the driver area since last september when I were last time fighting with that AccessRunner. So in case you allready have the card, you might want to check the current status if they are gotten any better (In my time, there where few binary-only drivers, others compied against old linux kernel, other against a kernel with custom redhat patches).