Confused by Eclipse

Hey, I'm a student and I need to use someone's code to get a bit of hardware doing it's good stuff. After a****** around in netbeans for ages I was told it's an Eclipse project (...sound), but I'm having trouble just getting it to debug. If I try and debug anything i.e. .java or .project files it says "The selection cannot be launched, and there are no recent launches" - I'm sure this is fairly basic stuff but I can't find any information that actually deals with opening someone else's project and getting it up and running, all the tutorials either start at the very beginning or leap in so far beyond my understanding I can't follow it (woods and trees and all that), any help massively appreciated
thanks

File->New->Project

click on "Java Project"

click "Next"

name your project

click on "Create Project From Existing Source"

Click "Browse" and find the folder your code is in

Click "Finish"

And that should get you started in the right direction. Hope this helps

Brilliant - thanks for that