What do you mean "to the power of 2"?
Resampled to 1024x1024 using IrfanView:
http://www.2shared.com/file/2893708/4415ff4b/The_Milk_background.html
Will there be cookies?
http://img179.imageshack.us/img179/1705/samandmaxxc4.jpgYou fail. But you're right: that was easy!
Steam will ignore the parameters if steam isn't already running when you execute:
"steam.exe -applaunch 70 <parameters go heeere>"