In about a month I am moving from the northern part of Norway to the outskirts of Oslo in the south. I am not taking much with me, but if I were to bring all my belongings I would look for a moving company since using one makes moving so much easier than doing everything on your own.

A website that helps you find a good and cheap moving company is movers.com. They can help you by letting you search through a lot of different moving companies to find the best quotes.
You can simply enter your information about where you are moving from and where you are planing on moving to. You can also choose what size your move is so you can find the best prices. When you have entered this information movers.com will give you quotes from moving companies that operate in your area.
Movers.com checks all the different companies in their database so you can be sure that they do not offer services from moving companies that are not serious.

Movers.com are mainly for moving within the United States, but you can also search for international movers both for moving to and out of the United States.
If I were to move to USA I would probably use this service to find a moving company that could move my stuff from Norway.