Yes Knoppix 3.4 [not the ct version] does support nvidia nforce drivers for network [I use dhcp] and sound but not for video, a shame about the graphics drivers but at least internet connection is now possible from the CD and Hard drive install which it has not been without building your own from .tar.gz till this version.
I seem to be having a problem mounting any of my 3 cdroms ie CDROM CDWriter, DVDWriter, oh well enjoy the nforce driver that are available now