Hey author, you might want to mention that if you insert the pick or credit card any further than about 5mm on lower edge of the screen, you can probably kiss it goodbye. The bottom edge bezel is less than half as wide as the other three sides and far more vulnerable (there is a tissue paper thin ribbon cable with about 30 conductors under the leftmost of the the three pieces of black tape).
In the garbage it goes.
You need to get to 10.6.8 via physical media, then app store update from there. I have read that Apple will send you a dvd for no cost, but the official price is $19.