Try copying the install to your hard drive then installing. Or clone your CD lol with CloneCD (Google it up - 30 day trial).
If you can and you're lucky, you can make a successful backup of your CD, and then use that to install.
My backup CD for BHD that I use has two big scratches on it - and it doesn't run too well in the drive. The scratches however are not really on the colour area of the CD - more of that transparent plastic area in the middle.
Hope that helps.
Chris
