Dreamweaver program/studio/?

Hey, I’ve been wanting to buy dreamweaver for a while.
I want to know what are some major differences with 4 (or whatever previous versions) and mx/mx pro.

All I basically use dreamweaver for is for the table arranging, basic layouting, maybe CSS creating and I really can’t think of anything else. Is it worth it for me to even buy it? heh

I want to spend the less here so I can spend it for flash or some other app. Can you guys give me a small sum-up on this?