ATI drivers installation - libglx.so

[Lorenzo Milesi <lorenzo.milesi@gmail.com>]

I'm a little messed up trying to install ATI drivers.

Due to a previous wrong Nvidia installation, now I (think I have) a
corrupted libglx.so which needs libGLcore.so.1 contained in Nvidia
binary packages.

Sadly now I can't understand how to solve this thing. As from
packages.debian.org libglx seems part of the nvidia package, so I
should remove it, right?
But I do need glx for my accelerated gfx, right? 
Right now I'm a bit lost.
Can someone help me?

thanks
maxxer