Can not get pxe to work with an ISC dhcp.

I had everything working perfectly (using novell dhcp) without the ISC
dhcp (solaris)

I moved my working server from my lab to the lab with the ISC dhcp and
nothing works.

What do I need to add in the ISC dhcp? a second bootp perhaps?

I get the error "PXE-E32: TFTP Open Timeout". Which seems to point to a
TFTP thats not loaded. It is loaded, I beleive it is timing out.