Excel - Macro? NEED ASAP bulk setting of margins and print scaling for print

I need this done asap! This is a simple project so I expect low bidding! I have 195 files that the margins are set incorrect and the print scaling is incorrect for printing. I believe this can just be a macro setup but don't know excel well enough. In total I will need you to: For All Files Set margins to custom settings. Set Print Area Set Print Scale to Fit Sheet on One Page Remove Header/Footer