I noticed that in the screenshot you posted it is giving a kernel panic about ACPI, I had that a few installs ago and was able to get past it by booting off of the install DVD and opening a terminal. Then I deleted /Volumes/{WhateveryourOSXVolumeisnamed}/System/Library/Extensions/AppleIntelCPUSpeedstep.kext (or something close to that). If you restart with -f to force a rebuild of the cache, that should get you past the kernel panic.