Making my secondary monitor "Desktop 2" when plugged in

I was wondering if anyone knew how to make the following happen in 10.7.

So I have all my primary work stuff in Desktop 1 in Spaces and iTunes in Desktop 2 in Spaces so it doesn't clutter up everything.

What I want to be able to do is have Desktop 2 automatically appear on the secondary monitor when it's plugged in. So basically I can have Desktop 1 on my laptop with Desktop 2 showing up in the secondary monitor when it's on.

Anyone know if this is possible?

Thanks!