Samba netgroups

[Clayton Fandre <cfandre@minn.net>]

I figured out why my netgroups aren't working with samba, but can't
figure out why it's not working. When I do a configure in the source
directory, I get the following line, which turns off netgroups. Anyone
know how I can get this to say YES???

checking for yp_get_default_domain... no

As far as I know I have everything installed for NIS. (Since it works
for everything else.)

Running RH5.1, 2.2.1

Thanks.
Clay