install problem iwth x86_64 bit version

[I NinetyFive]

I'm trying to install FC3 on a gigabyte ga-k8nxp-sli
motherboard, with an AMD Athlon 64 CPU and a evga
GeForce 6600 video card.  When I put eithe a CD or DVD
to try and install, with my DCL lcd monitor, I never
see the start up screen.  Has anyone had this problem
before and know how to fix it.  I installed FC3 i386
version no problem.  I even tried FC4 x86_64 version
and it didn't work, same problem.  I can install FC4
i386 version but I would like to get the 64 bit
version working first.  Any help would be appreciated.

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