This is what I had to do after installing 3.3rc1 or rc2 via debs from mainline - obviously you will have to ammend the proper paths and you need sudo on the 2nd line. I got this from the ubuntu precise testing forums.
cp generated/asm/unistd*.h ./asm
here is the thread I got the above from there are some other ideas in it as well if the the above is not working.
The driver for me still complains about my gcc version being 4.6 instead of 4.4 but seems to build and install fine I also set this up AFTER installing and removing nvidia-current from x-swat, but none would install before doing the above.