As far as I am aware adobe has not made a flash player of even a plugin or some sort for viewing web flash content. I wish they would get a move on getting it on BB. I run into a lot of sites I can't view all or part of the site due to no flash. I'm not sure how to answer the 2nd question.
Posted from my CrackBerry at wapforums.crackberry.com
This is not a straightforward problem. If it were, someone would have done it. Blame the stupid architecture of Flash and Adobe if you will for making Flash with fixed window sizes but don't blame the Blackberry for having a screen that is small enough to fit your pocket and being too small for Flash to fit.