fedora ltsp and broadcom

hello.

I have a little probleme.

I use LTSP on a fedora 7. all connexion is OK

but I have new computer with Broadcom 5754 and when I try to Boot on Pxe I have a kernel Pannic with a message : "could not automatically detect the network card.... use NIC parameters option-129..."

OK I try dowlod the drivers of broadcom 5754 and try to install It but is not really functionning , the rpm is not functionning.

try install Tg3 drivers but not realy functionning !

help me please....

have idea what I can for boot PXE with this network Card ?