loading module during pxe boot

[Eric Doutreleau]

i m trying to install a dell precision T1500

but i have the following stated here
https://bugzilla.redhat.com/show_bug.cgi?id=525966

When i pxe boot my comp the network card is not discovered then i can't 
install the machine.

The bug is closed because there s an updated kernel but no pxe 
installation images have been made.

There s a workaround to solve the problem

it s to load broadcom module bedore tg3.
is there a way in anaconda to force the load of a module ?

I can't make a dvd installation as i have numerous computers with this 
card with different configuration. and all are in my cobbler server then 
a network installation is really needed.

Thanks in advance for any help