Need help changing a 1440X1080 project to 640x360 - deadline in 4 hours

Hi guys,
i need some quick help. i'm just finished a project for a client in 1440x1480 25i
After I finished i was told I had to deliver the movie in 640x360
I don't see how i can change that in the export settings, then i tried to change the resolution in compressor. but when i load the project in compressor i can't change the frame size in "geometry". The "automatic" button is greyed out....
I hope you guys can help me out here.....it's 5 am here in holland and I have no idea what to do

rudolf

Are you using an Apple preset? They're locked. Duplicate it.

I'm not sure what you mean by 'duplicate it' tom.
But in the end it went allright for me....turned out compressor DID have the right preset for me, I just wasn;t looking in the right place and tought way to quickly that i had a problem and started posting & searching for a solution.
Job is done, thanks for your response
grtz
rudolf