There is a trouble in the display support. Did you try first to boot with acpi=off (in case of interrupts malfunction) in runlevel 3 and then check what kernel is currently implemented?
First, boot on runlevel 3:
when grub message is displayed press any key(the menu will be displayed) and then, press e (edit)
use the arrows to get on the line beginning by 'kernel'
add acpi=off 3 (the number 3) at the end of the line
validate (enter) and boot.
n case of success (boot in runlevel 3), just enter the following commands, to check what kernel is implemented, in reference to the Wiki
If the kernel is an i586, proceed as mentioned. Otherwise, do try setup another time.
If setup succeeded, set the parameters in /boot/grub/grub.conf to drive them to be permanent.