I very much doubt we'll win the group, but I think second is very probable. Given the climate, not to mention the defensive way England and Italy will play, I can see the games being short on goals; I can see us, Uruguay and Italy all finishing on 5 points, and it coming down to goal difference, so hopefully we'll give Costa rica a good thumping!
If we progress, we'll either get Colombia or Greece, likely the former, and despite a few talented players, I think our team is better and we could win, although I think it'd take extra time (I'm not predicting a lot of goals this tournament at all...)
If we get to the quarters, I can't see us getting past Brazil, Netherlands, Spain (maybe there will be a few upsets and we'll get Mexico, but even then, I doubt it...)