Yeah, got it! Everything works fine now - the touchpad and the USB mouse at the same time!
Heres a part of my XF86Config :
------------ start ----------------
Section "InputDevice"
Driver "mouse"
Identifier "Mouse1"
Option "Device" "/dev/psaux"
Option "Protocol" "ps/2"
EndSection
Section "InputDevice"
Driver "mouse"
Identifier "Mouse2]"
Option "ButtonNumber" "5"
Option "Device" "/dev/input/mice"
Option "Name" "AutoDetected"
Option "Protocol" "imps/2"
Option "Vendor" "AutoDetected"
Option "ZAxisMapping" "4 5"
EndSection
Section "ServerLayout"
Identifier "Simple Layout"
InputDevice "Keyboard1" "CoreKeyboard"
InputDevice "Mouse1" "CorePointer"
InputDevice "Mouse2" "SendCoreEvents"
Screen "Screen 1"
EndSection
--------- end -------------
mouse1 is the touchbad; mouse2 the usb mouse. Dont forget to add
InputDevice "Mouse2" "SendCoreEvents"
to the Section ServerLayout! This means that the Touchpad is the Core Device (CorePointer) and the USB-Mouse kinda support-mouse - it moves the same Pointer! (SendCoreEvents)
Huge thanx Tinkster - you safed my hd from another format