I want to completely uninstall the AVI driver on my linux box.

Why i want to uninstall it:

1.The current version's aticonfig utility wont work for me, i tried aticonfig /etc/X11/XF86config-4, the utility "captured" my config file and says it is done configuring the card, but when i restart X, the monitor display crap.

2.And i restore my backuped XF86config-4, this time i tried just to modify a line in the working XF84config-4 file (hoping that the driver will work), i just change vesa to fglrx, and i restart X, crap again.

3.I tried the old version of ATI driver (when the driver still bundled with driver) half a year ago on the same computer, same version of linux, same kernel, same everything, and it worked. (I have formatted my machine 3 months ago)

And i want to installing that old working version of the ATI driver, so
i have to uninstall that non-working version on my machine now. (I dont want to format just to remove a driver)

How can i achieve that goal?

FYI, i used the .sh script to install the driver. Not deb package...

Thanks in advance

There is no harm in just ignoring the files that were installed. Nevertheless if you want to remove them then I would recommend looking for a list of the files included in the package. The ATI driver package may have installed documentation on your system that will list the files in the package or you could go to the ATI web site and see if they have a list of files that come with the package. As long as the files are not used by anthing else, such as if ATI replaced common system files with their own version, then you should be able to just go down the list of files and remove them.