I've install ZenWorks 7 on OES and am trying to do a manual image (Ctrl +
Alt) from a desktop PC.

The desktop picks up an IP address from DHCP and communicates with Novell
Preboot Server, however when it tries to download the linux boot ISO you
get:
PXE-E32: TFTP open timeout
TFTP...

I would appreciate any help,
Andrew.