Hi,

Headus is an external application for creating UVs. You could use it but don't need too, I find Maya's UV tools to be fine.

Lot's of tuts on the net about UVs (just search youtube). I'm not sure if Mudbox has an option to create UVs, but even if it does I don't think it would have the amount of control you would like. It is always good to have well layout UVs before you start with a scuplting package.

cheers,

gubar