How to open existing project in Eclipse

I kind of feel stupid, but I just can't get it to work....

I have an existing Android project copied from my other pc, in the folder

c:\projects\trunk\android\emergency

(I created that project on the other pc, copied it to my new pc and the other pc is given away) Now I want to open the project in Eclipse. So I THINK I tried everything, but I can't seem to get it to work...

I looked for something like 'open project', but didn't find it.

Then I tried 'import', but that wouldn't let me import it because it was the same workspace (I use the same filelocations and workspace location as on the other pc)

Then i tried creating a new workspace and import it there. Then it complained about have no project, that i first had to create one. So i did create a dummy one in the new workspace, imported the project, and it copied everything to the new workspace, and placed it below the dummy project.

I am SO stuck, can you help me?

Btw, this is the Eclipse i'm using: Eclipse SDK Version: 4.2.0 Build id: I20120608-1400