For dust control, I use 3rd Hand poles and plastic.
Have you ever heard of Zipwalls? When I became self-employed, one of the first things I did was purchase dust control items. The 3rd Hand poles re half the price of Zipwall brand, and having used both, I like the 3rd Hand brand better. Easy to install and using Zipwall brand door zippers (they are self adhesive and install on a taut section of 4mil plastic), you can have easy access to the room.
http://www.amazon.com/Fastcap-3HANDCPACK-Contracto...
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There is a video on the amazon page in the link.
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The thickness of plastic you use depends on the application and length of time it's up. Use of .5mil painters plastic(like the video) is fine for short term. I use 4mil for use with the zipper door on longer term jobs.