Flash alignment problem on different screen resolutions


I have designed website in respect of screen resolution of 1024*768 pixels and it is looking proper with the screen resolution.

But when I see that websites in higher resolutions like 1152 * 864 pixels or more higher resolutions then all flash objects are left aligned. I have put flash in div tag as transparent flash on background image.

Can anybody please help me in this matter by suggesting proper solution to resolve this issue?

Thanks in advance,