Mine

Section "Monitor0"
    Identifier	"DELL"
    Displaysize 445 278
    Option      "DPMS"

    HorizSync 30-83
    VertRefresh 56-75
    Modeline "1680x1050_60.00"  147.14  1680 1784 1968 2256  1050 1051 1054 1087  -HSync +Vsync

EndSection

Section "Monitor1"
    Identifier	"Compaq"
#    Displaysize 445 278
    Option      "DPMS"

    HorizSync 31.5-70
    VertRefresh 50-120

EndSection

# **********************************************************************
# Graphics device section
# **********************************************************************

# Any number of graphics device sections may be present

Section "Device"
    Identifier  "Nvidia0"
    Driver      "nvidia"
    VendorName  "nVidia Corporation"
    BoardName   "GeForce 8800 GTX"
    VideoRam    786432 
    BusID	"PCI:5:0:0"
    Screen	0
    Option	"NvAGP"		"0"
    Option	"SLI"		"0" 
    Option	"NoLogo"	"False"
    Option "DynamicTwinView"	"0"   # set to this to get proper refresh rate with dual monitors
    Option	"RenderAccel"	"True"
    Option      "TripleBuffer"	"True"
    Option      "NoFlip"	"True"
    Option	"Coolbits"	"1"
    Option	"BackingStore"	"True"
    Option	"UseEdidDpi"	"FALSE"
    Option	"DPI"		"96 x 96"
EndSection

Section "Device"
    Identifier  "Nvidia1"
    Driver      "nvidia"
    VendorName  "nVidia Corporation"
    BoardName   "GeForce 8800 GTX"
    VideoRam    786432 
    BusID	"PCI:5:0:0"
    Screen	1
    Option	"NvAGP"		"0"
    Option	"SLI"		"0" 
    Option	"NoLogo"	"False"
    Option "DynamicTwinView"	"0"   # set to this to get proper refresh rate with dual monitors
    Option	"RenderAccel"	"True"
    Option      "TripleBuffer"	"True"
    Option      "NoFlip"	"True"
    Option	"Coolbits"	"1"
    Option	"BackingStore"	"True"
    Option	"UseEdidDpi"	"FALSE"
    Option	"DPI"		"96 x 96"
EndSection

Section	"Extensions"
    Option	"Composite"	"Enable"
EndSection

# **********************************************************************
# Screen sections.
# **********************************************************************

Section "Screen"
    Identifier  "Screen 0"
    Device      "Nvidia0"
    Monitor     "DELL"
    DefaultDepth 24
#    Option "ExactModeTimingsDVI" "1"

    Subsection "Display"
        Depth    8
       Modes	 "1024x768" "800x600" "640x480"
        ViewPort    0 0
    EndSubsection
    Subsection "Display"
        Depth	 16
        Modes	 "1680x1050" "1280x1024" "1024x768" "800x600"
        ViewPort    0 0
    EndSubsection
    Subsection "Display"
        Depth    24
	Modes	 "1680x1050" "1280x1024" "1152x864" "1024x768" "800x600"
        ViewPort    0 0
    EndSubsection
EndSection

Section "Screen"
    Identifier  "Screen 1"
    Device      "Nvidia1"
    Monitor     "Compaq"
    DefaultDepth 24

    Subsection "Display"
        Depth    8
       Modes	 "1024x768" "800x600" "640x480"
        ViewPort    0 0
    EndSubsection
    Subsection "Display"
        Depth	 16
        Modes	 "1680x1050" "1280x1024" "1024x768" "800x600"
        ViewPort    0 0
    EndSubsection
    Subsection "Display"
        Depth    24
	Modes	 "1280x1024" "1024x768" "800x600"
        ViewPort    0 0
    EndSubsection
EndSection

Section "ServerLayout"
    Identifier	"Main Layout"
    Screen 0 	"Screen 0"
    Screen 1 	"Screen 1" leftOf "Screen0"
    InputDevice	"Mouse1" "CorePointer"
    InputDevice "Keyboard1" "CoreKeyboard"
EndSection