[Newbie]about 3Dlabs Oxygen VX1

[Yu]

Hi all:   I use RedHat 7.2 and my video card is 3Dlabs Oxygen VX1 (chipset:GLINT R3) . I use Xconfigurator to set the video card. But faied to find the Oxygen VX1 in the step "Select your card".   Today i download XFree86 4.2.0 ,and install it .then i can start X server. but there are only XTerm and XClock on the screen . it doesnt start any window manager such as GNOME,KDE,etc..  i use command switchdesk to switch the desk to GNOME. the command return success information , but GNOME still doesnt appear. i restart the X-server, and  the problem is still there . :(    Thanks     Yu