Your best bet is to get the following files:

ftp://puma.bevd.blacksburg.va.us/pub/NetBSD/X/X.11Mar95.tgz
ftp://puma.bevd.blacksburg.va.us/pub/NetBSD/X/Xmacbsd.950912

The first is the entire X distribution compiled for NetBSD/mac68k.
The second is a newer version of the X server for NetBSD/mac68k.  Make 
sure that you install the new X server last, as it contains several fixes 
to the earlier X server.  Also, make sure that your monitor is set to 
1-bit mode before booting NetBSD.

Finally, if you really are new to NetBSD/mac68k, please fill out the user 
survey form at:

http://puma.bevd.blacksburg.va.us/~spearce/add.html

I hope this helps.

Later.

-- 
Colin Wood                                      ender@is.rice.edu
Consultant                                        Rice University
Information Technology Services                       Houston, TX