First of all, you need the tiny Torx bit that nearly every cellphone uses. Yeah, that one. Good luck finding it. As for the screws, there is one in the stylus seat, one directly to the left (covered with a little plug), and two more behind the battery.
When prying it open, you want to use a cheap, dull, and flimsy-as-can-be knife. I found an el cheapo serrated steak knife that works really well.
What you are doing is prying the faceplate a little wider so that the side locking tabs aren't as much of an issue. (They'll still give a little trouble.)
slide the blade up from the bottom. Twitch it inward. You'll feel and hear a pop.
Now, do this on the other side.
After you have done these steps, carefully pry the back plate off, starting at the bottom. There is an ext. antenna plug and the seats for the two upper screws creating a potential hazard for the motherboard and the bulkier circuitry upstairs. You have the antenna plug, LCD alert screen, IR transceiver, earpiece jack, and the board itself to worry about. Pry the sides of the front half outward (gently!), and finish pulling the front off at the top.