with the gforce 4 card there are a few issues
( i have a OLD ancient Gforce2 mx 400 card , that still works after 13 years )
nvidia sort of stopped supporting cards older than the old gforce5 series
and Xorg STOPPED supporting them in newer versions
now the 96 .run driver
-- 32 bit ---
"NVIDIA-Linux-x86-96.43.23-pkg1.run"
ftp://download.nvidia.com/XFree86/Linux-x86/96.43.23/
will run on CentOS 6.3 ,SL 6.3 and RHEL 6.3
they are using older versions of x11
Slackware 12 ??? i do not know . I do not use it and it is unsupported any way
i use rpm based distros
the "nouveau driver" half works
2d is great the 3d ???? very slow on the GF2 and will be on the GF4 ( they are the same age - 2000 and 2001 )
new distros use the "nouveau driver" by default now
to use the .run you will need to rebuild the boot image
-- I use "dracut " for that