Very Computer

If you are using the Kernel space version of the NFS deamon you need
NFS support inside the kernel. See the NFS-HOWTO.

Davide

I've tried compiling with kernel support and also with just module
support...none of it is working.

Well, I had problems myself before have this working, this was my
path: first I'm using 2.4.0, I build with NFS server/client support
in the kernel, then I had to update the NFS deamon software
(I downloaded the new version of the deamons and recompiled), then
I had to define the new /etc/exports and setup some permission
under /etc/hosts.allow and /etc/hosts.deny (I discovered that if
you don't have the correct permission for portmap into the
hosts.allow the system wont start.

After that, the nfsd was working fine on my system. On another
machine with kernel 2.2.17, the NFS was working without doing
nothing (very upsetting...).

I suggest you revise the NFS-HOWTO and check for "troubleshooting"
in the last part of the howto...

Davide