Merging two websites


#1

I run two websites, both are soley online forums.
http://australianmums.com.au/forum
http://huntervalleymums.com

http://australianmums.com.au/forum is new and I am happy to lose all the content.

I want to rebrand http://huntervalleymums.com (dropping the URL) as Australian Mums.

Both sites are hosted by Dreamhost, but http://huntervalleymums.com is the only domain registered.

I don’t have a clue where to begin.