M'Ted is quite correct if you intend to direct you do need a thorough grounding in acting. You will also need additional skills in the way of artistic, textual and literary interpretation, some knowledge of costume and its history. stage lighting, music and sound, set- building, man-management...

and deep pockets.

The university courses I mentioned are less acting oriented and will give you a much broader set of skills than a pure acting school will and will also enable you to try out film, broadcasting and television which will add to your marketability.

It's a tough profession, for every Olivier there are hundreds 'resting'. be sure of what you are getting into.