I've heard over and over you don't want to make a starter for dry yeast. I would not if I were you. Why? I'm really not sure, but I've read it a few times to make my not do it, especially since I've had tons of succes with dry yeast and no starter. Just rehydrate it.
If you go with a liquid starter, especially those from the vial, that's a good time to make a starter. Smack packs don't need one either, they just need to be smacked a few hours before pitching.