Activate other domain name

I’m managing a web for a friend who bought space and a domain on dreamhost. The .com domain name was bought from yahoo, and I had problems transferringing from them, to dreamhost. So, my friend bought and parked a .net name with dreamhost.

How do I change the status from parked? The domain manager says it’s active, and the files are uploaded, but the domain manager still wants to use the .com domain that’s sitting over at Yahoo. How do I unpark the .net domain? I can’t figure this out.