You're experience is quite the opposite of mine. I realize that the missing modversions.h file was just a symptom of more general install problems.
I was not able to a) select kernel modules to install/not install, b) install packages that had the 'make' utility even though I check off C/C++.
I am using Debian 3.0r1 (woody) CDs 1 & 2 to install. HW is A7N8X Deluxe, WD 80 Gig IDE drive, Daytona nforce type graphics card; really regular stuff.
Also, reading a bit more on this site, I found the "Guide to A7N8X Under Linux" thread. Too much work.
I'll try running the sarge "test" distribution that is built weekly to see if support is built in. I don't mind being a tester anyways to help with the Debian effort.