the computer we're using as our Ghost Server is connected to a switch, where we connect our computers for creating / restoring images.
I'm using TFTPD32. Like I mentioned in the original post, this setup works for all other machines (optiplex 760, 755, 620, some compaqs, etc) and I've used this setup in a old job / at home plenty of times. That with finding other threads on this site about a similar issue makes it sound like this isn't a PXE issue, as I could connect another PC and it will work.
TFTPD32 loads the PXE file (same file I use on every computer) bringing the menu for which ghost image I want to load. Once it times out on the default or I hit enter on the selection I want, when it attempts to load ghost, it hangs on the "Transferring Image..." screen.
Thanks!