LDRs are really hard, but it will work
if you want it to.
I was in a LDR with a guy for about a year and a half, and he ended up breaking up with me because of the distance. I would've broken up with him anyway because he was an asshole, but that's a different story.
My husband and I were long distance for almost 2 years, being 400 miles apart for half the time (NJ to MD) and 3000 miles apart for the last half (CA to MD). It was so ****ing hard to be apart, but we wanted it to work more than anything, and it did. We completely savored every moment we had together, and when we were apart, we just kept (pardon my cheesiness) our eyes on the prize. We knew we'd be together physically at some point, and we just kept working toward that.
There's really not much you can do to stop the ache of being apart, but talking on AIM or the phone a lot helps. One thing I completely recommend is writing letters to each other. I don't mean emails, I mean actual letters. You'll have the opportunity to say things that you forgot to say in your other conversations and to express your true feelings in a non-rushed/stressed/pressured atmosphere. Also, once you're together all the time, you'll be glad you have all of those letters to look back on and remember how difficult the long distance was... which will make you appreciate being together even more.
Okay, I think I'm full up on sap tonight...