[ubuntu] Installing generic-pae without breaking Installed ATI VGA on Ubuntu 11.10

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http://ubuntuforums.org – hi UBUNTU peeps =) i already installed and it is working properly, AMD Raden HD 6470M under Ubuntu Oneiric on my HP G6-1045sx Laptop. Question: how can i install or update or upgrade my kernel-3.0.0-12-generic to 3.0.0-19-generic-pae without breaking my properly installed ATI Graphic card..? I attempted many times upgarding my 3.0.0-12-generic to 3.0.0-19-generic-pae but it gives me a lot of headache.. I Stuck-up on terminal with battery state in there, dispatcher, and some sort of process is appeared there.. at that's it.. I Stuck there. and I need to "sudo rm /etc/X11/xorg. (Hardware)