cannot get PXE to work

I have an OES NW sp5 server running ZfD 7.01. When I try to PXE boot a
workstation, it searches but never gets a response from the server.

The ZIMGDB.LOG shows the following:

Mon Jul 30 15:22:41 2007 -- [PJS] error: 1
Mon Jul 30 15:22:41 2007 -- [HC] received PROXY_CMD_REQ_SAFEDATA
Mon Jul 30 15:22:41 2007 -- [AO] "server.ou.o"
Mon Jul 30 15:22:42 2007 -- [RAD] Error -603, "zendmSearchOrder", "CAB
Container Package:General:Search Policy.Cab.LaTech"
Mon Jul 30 15:22:42 2007 -- [GWC] netbios
Mon Jul 30 15:22:42 2007 -- [GWC] workgroup
Mon Jul 30 15:22:42 2007 -- [GWC] ip
Mon Jul 30 15:22:42 2007 -- [GWC] dns suffix
Mon Jul 30 15:22:42 2007 -- [RAD] Error -603, "zenimgDNSSuffix", "CAB-ZEN
Server Package:General:Imaging Server Policy.ou.o"
Mon Jul 30 15:22:42 2007 -- [GWC] dns name servers
Mon Jul 30 15:22:42 2007 -- [RAD] Error -603, "zenimgDNSNameServers",
"CAB-ZEN Server Package:General:Imaging Server Policy.ou.o"
Mon Jul 30 15:22:42 2007 -- [HC] image safe data sent
Mon Jul 30 15:22:42 2007 -- [HC] received PROXY_CMD_CLOSE
Mon Jul 30 15:22:42 2007 -- [ECC] close connection, xxx.xxx.xxx.xxx
Mon Jul 30 15:22:42 2007 -- [ECC] CS

What can be the problem here?

Darrell Eddy