1: acquire_screen() is one of those commands you should never call under any circumstances unless you know exactly what it does and what you can do with it. If you're using it because someone or something told you to, don't.
2: You've only posted enough code to confirm that you know how to initialize your program. If you want serious help, you need to post all relavant code, and if you're not precisely sure what's relavant and what isn't, you need to post all of it.
--- Kris Asick (Gemini)