|Can anyone provide information on where to start. I've got the idea in my head that I need to understand PXE more or is that incorrect?|
Yes, a PXE NIC and a network bootdisk/CD.
Just google "network bootdisk" and you'll definitely find some links to one's that are already made that you can just download and stick on a floppy. If you're PC's don't have floppy drives, you'll need to research a bootable network CD. Same thing, just google it.
Boot with the network bootdisk (CD), the PC gets a valid IP from DHCP, you then map a drive to the share with the image and start the install. If you know what you're doing, you have the drive map as part of the boot sequence.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.