Mine

Section "Files"
#	FontPath	"/usr/share/X11/fonts/misc"
#	FontPath	"/usr/share/X11/fonts/cyrillic" # does not exist
#	FontPath	"/usr/share/X11/fonts/100dpi/:unscaled"
#	FontPath	"/usr/share/X11/fonts/75dpi/:unscaled"
#	FontPath	"/usr/share/X11/fonts/Type1"
#	FontPath	"/usr/share/X11/fonts/CID" # does not exist
#	FontPath	"/usr/share/X11/fonts/100dpi"
#	FontPath	"/usr/share/X11/fonts/75dpi"
        # paths to defoma fonts
#	FontPath	"/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
#	FontPath	"/var/lib/defoma/x-ttcidfont-conf.d/dirs/CID"
EndSection

Section "Module"
	#Load	"i2c"
	Load	"ddc"
	Load	"dbe"
	SubSection "extmod"
		Option 	"omit xfree86-dga"
	EndSubSection

	Load	"glx"
	Load	"dri"
	Load	"type1"
	Load	"freetype"
	Load	"record"
	#Load	"vbe"
EndSection

Section "InputDevice"
	Identifier	"Generic Keyboard"
	Driver		"kbd"
	Option		"CoreKeyboard"
	Option		"XkbRules"	"xorg"
	Option		"XkbModel"	"pc104"
	Option		"XkbLayout"	"us"
EndSection

Section "InputDevice"
	Identifier	"Configured Mouse"
	#Driver		"mouse"
	Driver		"evdev"
	Option		"CorePointer"
	#Option		"Device"		"/dev/input/mice"
	Option		"Device"		"/dev/input/mx1000"
	#Option		"Protocol"		"ImPS/2"
	#Option		"Emulate3Buttons"	"true"
	#Option		"ZAxisMapping"		"4 5"
EndSection

Section "Device"
	Identifier	"radeon-dvi"
	#Driver		"radeon"
	Driver		"fglrx"
	BusID		"PCI:1:0:0"
	Option		"DesktopSetup"		"horizontal,reverse"
	# helps with 'crash on exit to gdm' issue
	Option		"UseInternalAGPGART"	"no"
	Option		"mtrr"			"off"
	Option		"BlockSignalsOnLock"	"on"
	Option		"Mode2"			"1920x1200"
	Option		"MonitorLayout"		"AUTO,AUTO"
	Option		"FSAAEnable"		"no"
	Option		"VideoOverlay"		"on"
	#Screen 1
EndSection

Section "Device"
	Identifier	"radeon-vga"
	#Driver		"radeon"
	Driver		"fglrx"
	BusID		"PCI:1:0:1"
	#Screen 0
EndSection

Section "Monitor"
	Identifier	"dell"
	Option		"DPMS"
	Modeline "1920x1200"  154.128 1920 1968 2000 2080  1200 1203 1209 1235 -hsync -vsync
EndSection

Section "Monitor"
	Identifier 	"apple"
	Option		"DPMS"
	Modeline "1680x1050" 119.0 1680 1728 1760 1840 1050 1053 1059 1080
EndSection

Section "Screen"
	Identifier	"apple-scr"
	Device		"radeon-dvi"
	Monitor		"apple"
	DefaultDepth	24
	SubSection "Display"
		Depth		24
		Modes		"1680x1050"
		Virtual		1920 1200
	EndSubSection
EndSection

Section "Screen"
	Identifier	"dell-scr"
	Device		"radeon-vga"
	Monitor		"dell"
	DefaultDepth	24
	SubSection "Display"
		Depth		24
		Modes		"1920x1200"
	EndSubSection
EndSection

Section "ServerFlags"
	#Option "Xinerama" "true"
EndSection

Section "ServerLayout"
	Identifier	"Default Layout"
	#Screen		"dell-scr"
	#Screen		"apple-scr" RightOf "dell-scr"
	Screen		"apple-scr"
	#Screen		"dell-scr" LeftOf "apple-scr"
	#Screen		"dell-scr"
	InputDevice	"Generic Keyboard"
	InputDevice	"Configured Mouse"
EndSection

Section "DRI"
	Mode	0666
EndSection