Oh, if the screen is cracked then you can just replace the whole top part.
I think they sell them for around $400-600ish on ebay.
All you'd have to do is remove the bottom panel, take out 4 screws that attach the hinges to the base, then unplug all the other wires such as iSight, Display & Backlight, as well as the Wifi ones.
Then, just do that in reverse order with the new top case.
For instance:
http://cgi.ebay.com/Macbook-PRO-15-...696?pt=LH_DefaultDomain_0&hash=item27b4c0cc88