Owen,

> Do I have to compile from source (I'd rather not on the Qube)?

Yes.

> Can anyone help me with getting X installed?

Grab the source code for X11 from 
ftp://ftp.NetBSD.org/pub/NetBSD/NetBSD-current/tar_files/xsrc/{file} 
where {file} is contrib.tar.gz, local.tar.gz, top-level.tar.gz, 
xc.tar.gz, and xfree.tar.gz. These files contain an X11 source tree 
customized for NetBSD. Expand it into /usr, this will creat a /usr/xsrc 
directory. Switch to /usr/xsrc and type "make build" (I think this is 
the correct command but I don't have the NetBSD guide handy). 
Compilation will take many hours.

-Andreas