Hi Cdsnuts,
The settings for Browser-SWF size are found under:
Publish Settings/HTML
You can try 'Match Movie', also under 'Scale you can use 'No Border'. Just play around with them.
Be careful though as making your Movie 'Fill' the screen, can distort the look you were trying for. If you do make you movie fill the screen, then remember to make your movie size relative to browser screen size.
The HTML that Flash generates will have the colour of the SWF back ground. I like to import the generated HTML into Dreamweaver and tidy up the script.
I am pretty sure that Flashkit.com have a few tutorials on this topic. I suggest going and checking them out.