System hangs after grahics update

[Guest]

Hi all. I did a clean install of KUBUNTU 11.10. It was running OK. The muon updaters were chashing but I fixed that with updates. Everything was working pretty good except video was slow. I have the HIS 4670 PCIe 1GB DDR3 IceQ video card (its a ATI/AMD chipset). I went to the additional drivers utility. it found:

"ATI/AMD proprietory FGLRX, graphics driver" and
"ATI/AMD proprietory FGLRX, graphics driver ("Post Release)"

I choose to do one at a time starting with "ATI/AMD proprietory FGLRX, graphics driver" . It stated that download and install were complete and I had to restart system to activate drivers. After reboot the system hangs at the blue "KUBUNTU" screen with the flashing dots (dots stop flashing and HD light stops flickering). It does not get to the KDE splash screen.
I am only able to get to system at GRUB 'Drop to root' or What I am using now. What I am using now is Boot into "previous 3.00.0x generic (recovery mode)" In this mode my system fully boots up . I also have installed a Hauppauge WinTV-HVR-1600 which KUBUNTU sees.
I've been googling and trolling various forums for two days looking for help. I need step by step guidence/help. ATI /AMD has downloads for linux drivers that I put on my usb flash stick. But I'm am confused about wich one to use, where to unzip them and how to install them. I'm not even sure if I need them. This is my first attempt at a multimedia machine/MythTV so the video is important. I can't afford to get another card (NVidia). I am comfortable using shell commands (used them to fix muon).

[Teunis]

When you are able to get the system up and running via the recovery mode you might want to change the installed driver to the Post Release version, it's a little newer with various updates that might be useful for your situation.

About drivers you get from the manufacturer, the way to install them is entirly dependent on the format they are in, so please shed some light.