In this video tutorial, I share a technique that I use for creating custom chrome for your windows in AIR when using Flex. There is also another tutorial for doing something similar in Flash presented by Lee Brimelow on Adobe TV.
Video: Creating Custom Chrome in AIR using Flex
Published
Daniel Dura 
Nice tutorial, thanks a lot!
I ran into an issue(maybe a bug) using this approach on resizing. Using Mouse_down event to startResize(), drag to move the window resizing. But after that, I try to click somewhere else, the window resize again itself like crazy.
Oh, is this guy Lee?
He’s really a great guy, I enjoyed his tutorials since 2005, haha 🙂