Building Room Sets

[Photojournaliste]

I'm looking for tips (websites, you guys out there, anywhere, anything) for building room sets. I'm sarting to gather around ideas and clients that are requiring room sets, and I'd like some useful tips from the pros out there...

I'm looking for something I could move around easily.

I'm also wondering how to make windows, I assume it's a whole and then a soft box behind it, maybe with an extra diffuser in front...

Any leads? Articles, websites and whatnots would be welcomed!

[PhotosGuy]

Is there a group producing plays in your area?
If you google Theatre "set design", you get 700,000+ links.