[syslinux] gpxe and pxelinux

[Craig]

I have been looking at the etherboot site and at the syslinux/pxelinx
sites trying to figure out how to use gpxe, and I am a bit confused. :)

In a nutshell, I simply want to use http to grab the config and messages
files. (I need those files to be dynamic.)

I tried just replacing pxelinux.o with gpxelinux.0. But, gpxe complains
(A LOT) about unrecognized commands. I can't find a simple example for
the config file. Also, I downloaded the gpxe source and don't see any
documentation. (The docs dir seems to be docs about the source code and
not how to use a compiled version.)

Just to be clear, I am able to get the gpxelinux.0 image loaded, but I
don't quite understand how to configure it.

Also, the main syslinux page mentions that gpxe will not chain to
another NBP. Does this mean you can't use gpxe to load, say, Fedora?

TIA!
Craig