Position objects

Hi there,

Anybody can help with the following? I would like that an mc form my main movie keeps the same x position when the site is rescaled and is 30px from the bottom. My logo to keep the same x an y position. Same form my nav and textframes. For my backgroundpic I’d like it to keep alligned right and take the hight of the stage and rescale proportional to that. Anybody can help me out on that.

Big thx in advance;)