ZenWorks 7 Imaging w/nw6.5sp1

I am trying (and not succeeding), at getting ZenWorks Imaging PXE booting
working. We have ZenWorks 7 installed on a NetWare 6.5 SP1 server. All the
modules load ok, using pxestart.ncf; but my workstations are unable to grab
a PXE image to boot off of. I have also set option 60 in the DNS-DHCP
console to PXECLIENT, and reloaded everything. Any ideas? I'm not even sure
what to include. Please let me know! Thanks!

-Craig