Well, I know the video card part of the question.
Goto a console and type init 3
Then hit enter and log on as root.
Then type "sh NVIDIA-Linux-x86-1.0-4363.run" or whatever the file name is. If you use older drivers then the instaqll is different though.
Then type init 5 to get back to the X desktop.
Instead of doing make; make install on the tarball file for your nic have you tried going into the nvnet folder with a terminal and doing a make; make install there?
This worked for me instead of trying to do the entire file with sound and everything. Although I have only had partial success with it.
Hope some of this has helped.