Html question

ok, im not the best with html, here’s the problem. I have a flash site that im working on and im using dreamweaver. i have it set up so that when you click on the splash page it brings up the html page with the swf in it. the problem im having is that when the window opens with the swf there is a border around the swf. ive sized the window to the exact dimensions as the swf but it just ends up cutting off the bottom and right side and leaving a border on the top and left margins. the only thing i have in the code is the background color and swf file.
does this make sense?