I've been tasked with picking up someone elses Java code and adding some functionality to it.

I'ved pull down the source tree from CVS and see a bunch of .jar files in different folders. I'm guessing the developer did not use Eclipse.

I am new to Java (coming from .NET background) and have used Eclipse so far to create one Java project. I'm wondering now that I have this guys files (he has classpath.jar and other .jar files along with some subfolders each with 'java' files in them), how do I open them? I tried opening one at a time, etc.. but doesn't seem to work. IS tehre an easy way to do this? I thought there' might be some kind of 'import existing code' thing in Eclipse but I can find it. How can I do this? Do I re-create the folder structure and just add the existing files one a time? 

Thanks much for any help