If it's going to be distant, it best be strong. Keep in touch constantly, at least once a day. If not online, then by phone. Send her the occasional snail mail, to make things more personal and intimate between the two of you. And, if you got the money, fly/drive to visit her every once in a while. Not saying you should do that all the time, but maybe once every few months. This is how my brother and his girlfriend continued a long-distance relationship three states away (California and Washington) for over two years. And now they live together.
Ah, and an ocean separates the object of my affection from me...
"I like refried beans. That's why I want to try fried beans, because maybe they're just as good, and we're just wasting time." - Mitch Hedberg (1968-2005)
"Football is about if you want to run and fight for each other, if you really want to play that killer ball." - Robin van Persie, Arsenal FC