Created a PXE on disk, able to boot up and access the ZEN Maintenance
Menu. After selecting either 'Start ZEN Imaging' or 'Start Maintenance
Mode ZEN Imaging', the PXE client downloads three files (Linux.1, Linux.2
and loadlin.exe) and seem to execute them, then the PXE client just
hangings at the "Now reading INITRD: Loading...........(lots of
dots)......." and I can't even hit Ctrl-Alt-Del to reset the PC.

Am I missing something?

ZFD v4.0 is running of Windows 2000 with SP3
PXE on Disk is using 3c905c-TX