Help with publishing flash site _ Screen resolution

HI guys,

I made a site to be seen in a 1024x768 resolution
(as of now it only works in IE)
as the cliente asked, now he changed his mind and wants it to fit in a 800X600 res.

I changed the size of the movie from pixels to percentagen, and if you resize the browser the site does change scale, but the letters and the images get messed up.

Anyone knows a work around this problem??