Seems like a circular error: Can't install the driver because it can't find the nvidia kernel module because the driver installer can't install it!
Sadly, I am having the same probelm as you with the exact same video card. I also recently installed woodyr2, although I updated to the 2.4.28-686 kernel.
Same result, however...
Try posting on the linux.debian.user Usenet group. I haven't been able to find anyone with the problem we are having exactly, but there is nvidia driver related threads. In fact, go to Google Groups and search for the thread: nvidia driver compiling problem. It is a current thread and Google will even let you post follwups.
I will do this myself as soon as get home from this business trip I am on so I can post my own installer log results.
Do not meddle in the affairs of wizards, for they are subtle and quick to anger.