Maybe I'm missing something simple

I have a 1024x768 flash document that I want to run all the way to the top & bottom of the browser - I’m trying to avoid using a pop up window unless someone knows a 100% sure way for it not to be blocked.

The problem is if I set the hight to 100% & the width to 1024 pixles it crops the top edge If I set both to 100% it distorts the file and I can’t just modify the file since everyone will have a different useable area in their browser due to tool bars & things like that.

Any tips? I’m open to pretty much any suggestions. Thx.