Moving Directory to Domain - Redirect Help

I’m moving:

And all of it’s sub directories to

I want to redirect all traffic to the new stand alone domain and not mess up the page ranking too much.

So here’s what I need to know how to do:

Redirect the most amount of traffic for my buck without going through each page
I’m going to import the blog there into our movable type from blogger - so should I put the old blog on the new server anyways and redirect and just start again - or just redirect all the traffic to the new blog?
How do I do a .htaccess file to make this easy? Is that the way to go?

Any help here as I’m getting started would be great. We’re looking at about 500 pages.