pxeboot not working for knoppix 7.2.0

[Ryan Chase <rchase@cs.vt.edu>]

I cannot pxeboot knoppix 7.2.0 from either an existing pxe server 
installation or by booting a knoppix CD on a computer and running 
terminal services.  On the client, it fails to probe for any network 
card and insert the appropriate kernel module.  This behavior exists on 
both the CD and DVD versions.
  I can, however, pxeboot knoppix 7.0.5 successfully using the same 
machines in the same environment.

Is this a known issue?

 --Ryan