[Newbie]Change of Resolution on the fly with ATI R128 Drivers on anInspiron 8000 From Dell

[newbie@XFree86.Org (Vincèn Pujol)]

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		Hi,
	I encounter the following problem on a notebook Inspiron 8000 from
Dell. The Video card is an ATI one, I use the r128 driver with success
and it allows me to use full resolution of the flat panel 1400*1050. I
would like to switch between this resolution and a 800x600 or 640x480.
The issue is: I need to do CTRL + ALT + + in same time but the + is only
available on the keyboard, not on the numeric keypad as there is none on
a notebook. What can I do ?? I join my XF config file for your help.
		Thanks a lot

Vinc=E8n
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Vinc=E8n PUJOL
Bayonne, France

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Section "ServerLayout"
	Identifier     "XFree86 Configured"
	Screen      0  "Screen0" 0 0
	InputDevice    "Mouse0" "CorePointer"
	InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
EndSection

Section "Module"
	Load  "GLcore"
	Load  "dbe"
	Load  "dri"
	Load  "extmod"
	Load  "glx"
	Load  "pex5"
	Load  "record"
	Load  "xie"
EndSection

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

Section "InputDevice"
	Identifier  "Mouse0"
	Driver      "mouse"
	Option      "Protocol" "PS/2"
	Option      "Device" "/dev/mouse"
EndSection

Section "Monitor"
	Identifier   "Monitor0"
	VendorName   "Monitor Vendor"
	ModelName    "Monitor Model"
	HorizSync    31.5 - 90.0
	VertRefresh  60.0
	Modeline "1400x1050" 108.000  1400 1448 1462 1688  1050 1050 1053 1066
EndSection

Section "Device"
	Identifier  "Card0"
	Driver      "r128"
	VendorName  "ATI"
	BoardName   "Rage 128 Mobility LF"
	BusID       "PCI:1:0:0"
    Option "BackingStore" "On"
    Option "Display" "Mirror"
EndSection

Section "Screen"
	Identifier "Screen0"
	Device     "Card0"
	Monitor    "Monitor0"
	DefaultDepth 24
	SubSection "Display"
		Depth     24
		Modes "1400x1050" "800x600" "640x480"
	EndSubSection
EndSection

Section "DRI"
EndSection


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