It should come with the graphics card preinstalled. There should be inputs near the bottom-back of the case, and those would be the only connecting inputs.
Once the sun dies out, I believe it implodes then rapidly expands. By then, I'm sure a nuclear fallout would have happened. If a fallout didn't happen, we would be exterminated by lack of resources.
Well XBL was down for Christmas, which Lizard Squad took credit for. But I back to OP, I've never heard of problems involving an Xbox completely shutting down from a game. Did you just get the Xbox for Christmas?
Upgrading a desktop is easy, but I would think that a laptop, being compact would be near impossible to upgrade without removing everything. The hassle could all be avoided by buying a new monitor.
Will it reset daily, or is it a place where you play, then come back the next day and continue right where you left off.
If you have it set to reset daily (Start over with nothing), then having a small map will make it easier for people to find eachother.