Hi Angie,
I have server space as part of my self employed work that I do evenings and wkends. I had been considering some kind of rescue hosting for Purr's rescues so now is probably as good a time as any to start.
I'm a web designer so I'm sure I can help sort out a Content Management System if you need a new one, but in theory you should just be able to transfer over the one you are using at the moment, I guess this depends which one it is though. I don't suppose you could find out from your current host? I know a couple of good free ones if needed.