Here are the directions for the Unibody screen removal: Installing MacBook Pro 15" Unibody Mid 2010 Front Display Glass
Note you will need a heat gun and the suction cups help.
Here's the heat gun I use: Heat Gun
Here's the suction cups: Heavy-duty Suction Cups (Pair)
Two 2.25" diameter suction cups used for lifting glass off Aluminum iMacs. — 50+ available at 14.95 each.
Use to loosen adhesive, especially on displays. — 25 available at 24.95 each.