Hello Linux guys and girls.

I have a small problem.
I have a panel pc which runs mandrivalinux 2007. This panel pc has a touchscreen (usb) on it an Linux finds it and also use it.
The only problem is that the x axis is flipped. I know that i can change that in xorg config file. But my problem is that I do not see the settings in the xorg file pointing to this touchscreen like
a mouse pointer device,like a section pointing to the device handler.
Seems Linux uses some default setting for this touchscreen that are not written in the xorg config file. Does anyone know where these default settings are written in which config file,
and how i can change them. Or do i need to make a new section in the xorg config file to set my own manual settings. Been working on this problem for 1 week now but have no idea where to find the default settings. I think linux sees the touchscreen as a default mouse pointing device or something.

Project:
The hardware is a cheap panel pc (TC10), low power consumption from earthlcd. I wrote my own software in QT4 to show weather information and aviation information for flight preparation.
I am a glider pilot, so like to have these information without the need to start my work pc.

Any help will be welcome.
Grayson.