ATI driver installation

[Vincent Onelli <vonelli optonline net>]

Hello,
I have an HP zv6000 with ATI mobility radeon xpress 200 series the
present driver is ati2mtag.sys Apr 01,2005. I installed F10 every things
went perfect and worked fine, but after the first update to
kernel-2.6.27.7.134 the screen gets fool of horizontal line just before
entering the PW. I was able to boot by selecting the previous kernel,
kernel-2.6.27.5.117, eventually the second update came which I was
hopping that it may correct the previous problem but it didn't happen.
I suspect that I may need an update driver, I checked ATI web side and
found a file "ati-driver-installer-8-12-x86.x86_64.run" and the
instruction file "linux_cat812-inst.pdf". I got stuck at the first
instruction "sh ./fglrx-uninstall.sh" not found
Any body there can help? I will appreciate very much.
Thank you