[ubuntu] Help recovering after bad bad video driver install

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http://ubuntuforums.org – Howdy, I have Ubuntu 9.10 installed on a Lenovo X500 laptop. Today I decided to install the proprietary ATI/AMD graphics driver that was shown as available in the "Hardware drivers" Administration menu. I clicked "Activate" and it installed and told me I needed to reboot. But on reboot the display was blank (splash screen did appear, but then went blank). Rebooted again and hit escape at "Grub loading", but can't get the grub menu in order to boot single user (screen has garbled "bits", all un (Hardware)