an internet connection, at LEAST 512mb ram, tho i highly recommend you have 1 gigabyte, and a somewhat decent videocard, a 128mb one will do. also i think you need 4 gigabytes of space for the game alone, and about 2 gigs free for the swap file (so it doesnt lag or take a while to load) uhm...also i recommend broadband but aol will do just as well, though you may get lag in space.
"Without strife, the victory has no meaning. Without strife, one does not advance. Without strife, there is only stagnation."