If the gui installer *thinks* that it can't find a video card, there is no video card selection list on install. It will just display the monitor selection. There is no way to force it to let you pick a video card. X won't install properly if you don't have a selection for it. Even after the install, using rpms to install all of X there is something missing. It should at least put in a low level VGA server, since the gui install shows the screen properly. Hardware: IBM PC300GL 6277 with S3 Trio 3D card on board.
This issue is resolved in the latest installer available in beta.