Yeah.  I went back and looked at that 3400c-Cardbus site last night.  The USB drivers they had (which are no longer on that server) were apparently cracked.  I'm inferring from that that they were machine-specific.  Okay great.  I was going to break out ResEdit and refresh my memory, assuming that's how it was done.  But it looks like AlkSoft has the patched versions.

Thanks Gorgonops.