If you're not a douche and you're a regular, I'm sure you could get away with asking for level 1. Level one, however, is only name protection. If US1 is in need of admins and you're a decent player (but more importantly, a decent person), one of the admins will pick up on it and you'll probably get adminned. Try doing admin-like duties; report players who are being dickheads and the like. Or just do their coffee and muffin runs. Other than that, there's no sure-fire way to get admin. I'll tell you what you DON'T want to do, though: don't ask about getting admin, and certainly don't do it more than once. That will just get you on the "do not admin" list.
Adminning (moderating) is kind of like a job in the respect that you need to be active, but you also need to be needed. No one's going to hire you if they've got a full staff already. Keep that in mind.