domain names -- changing, adding, pointing

[ypryor]

I have used one domain name (let's call this DN1)  to create a website in weebly PRO. It has been running for a few months.

Now I wish to change the main domain name associated with this website (say, to DN2). I also have other domain names which I want to "point" to DN2. 

How may I do all that, and what do I stand to lose (or gain)? What other options should I consider?

Your help would be much appreciated.

[Adam7]

Thanks for posting, @ypryor. What you'll want to do is publishing using "DN2" as the site address, then forward your other domains to DN2 so they all end up loading the site.

[ypryor]

Thanks Adam.. Much appreciated.

[Adam7]

Not a problem!

[JenniferinAZ]

I want to do the same thing but don't know how to forward the old ones.

[Adam7]

Are your old domains registered through us or somewhere else, @JenniferinAZ?