using X with dual monitors

Hello All, i am trying to get X working with 2 monitors in fedora core2. I have one monitor working just fine, but when i try and bring the second monitor up, things go haywire. I am using 2 seperate video cards, one a ati rage128, and the second is an S3 Virge card. I have 2 gateway flatpanel monitors, FPD1530 and FPD1570. The problem is, when i try and set it to use 2 monitors...The left monitor (connected to the rage card) goes blank and the right monitor turns black and gives me 20 seconds before it brings the systems power into standby. Once this occurs i lose the power of the keyboard... so weird... here is my Xconfig file...from what i have read on the web, it appears to be just fine...

Section "ServerLayout" Identifier "X.org Configured" Screen 0 "Screen0" 0 0 Screen 1 "Screen1" RightOf "Screen0" InputDevice "Mouse0" "CorePointer" InputDevice "Keyboard0" "CoreKeyboard" EndSection

Section "Files" RgbPath "-usr-X11R6-lib-X11-rgb" ModulePath "-usr-X11R6-lib-modules" FontPath "-usr-X11R6-lib-X11-fonts-misc-" FontPath "-usr-X11R6-lib-X11-fonts-TTF-" FontPath "-usr-X11R6-lib-X11-fonts-Speedo-" FontPath "-usr-X11R6-lib-X11-fonts-Type1-" FontPath "-usr-X11R6-lib-X11-fonts-CID-" FontPath "-usr-X11R6-lib-X11-fonts-75dpi-" FontPath "-usr-X11R6-lib-X11-fonts-100dpi-" EndSection

Section "Module" Load "dbe" Load "extmod" Load "vnc" Load "dri" Load "xtrap" Load "glx" Load "record" Load "freetype" Load "type1" Load "speedo" EndSection

Section "InputDevice" Identifier "Keyboard0" Driver "keyboard" EndSection

Section "InputDevice" Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "-dev-mouse" EndSection

Section "Monitor" Identifier "Monitor0" VendorName "GWY" ModelName "FPD1530" HorizSync 31.0 - 63.0 VertRefresh 56.0 - 75.0 Option "dmps" EndSection

Section "Monitor" Identifier "Monitor1" VendorName "GWY" ModelName "FPD1570" HorizSync 30.0 - 60.0 VertRefresh 56.0 - 75.0 Option "dmps" EndSection

Section "Device" Identifier "Card0" Driver "ati" VendorName "ATI Technologies Inc" BoardName "Rage 128 Pro Ultra TF" BusID "PCI:1:0:0" EndSection

Section "Device" Identifier "Card1" Driver "s3virge" VendorName "S3 Inc." BoardName "ViRGE-DX orGX" BusID "PCI:2:7:0" EndSection

Section "Screen" Identifier "Screen0" Device "Card0" Monitor "Monitor0" SubSection "Display" Viewport 0 0 Depth 16 Modes "1024x768" EndSubSection EndSection

Section "Screen" Identifier "Screen1" Device "Card1" Monitor "Monitor1" SubSection "Display" Viewport 0 0 Depth 16 Modes "1024x768" EndSubSection EndSection

any reason why this wouldnt work? i want ideally to have 2 seperate desktops on each machine that the mouse can move from one to the other with.

thanks adam.