Complex problemo with flash and scrollbars

Hi there.
Ok, I have, what it seams, a “complex” problem ( I HOPE I am very wrong about this “complex” thing and the solution will end up being very simple)
I created a quite big flash movie clip. Quite big in dimensions, x = 2880 y =2880. Or something like that.
It’s a map for a game, that when u click in a city name located at ur right hand, the map will centralized itself putting the chosen city in the middle of your screen.
So far, so good.
The F!@#$ problem appeared when I tried it in a browser! Since the flash file is big in dimensions, the browser displays scroll bars, and when the user uses those stupid scroll bars to move around the map, and not anymore the arrows provided inside of the flash movie clip, the centralization doesn’t work anymore due to the fact that the scroll bars of the browser where used and messed up everything.
Tried using FRAMES so I could eliminate those flipping scroll bars ( I am gonna have nightmares related to scrollbars). Looks to work quite nice without them. But, again, nothing is perfect, so when I change the settings of my screen from 1024x768 to 800x600; again, the centralization doesn’t work.
Anyone could give a hint, suggestion, clue or anything on how to solve this problemo???
Or I just have to tell the user that the map will just work on a specific screen resolution AND with Frames enabled???
Thanks a lot.
Leo.