Newbie Q: Upgrading a package

[Chris Share <cpsmusic@labyrinth.net.au>]

Hi,

This is a real newbie question so please excuse my ignorance.

I'd like to upgrade one of my programs (Rosegarden). I've tried using 
apt-get however I keep running into dependency problems.

Is there a good newbie tutorial on how to upgrade a program using apt-get 
anywhere?

Cheers,

Chris