Wanna have two Excel files beside each other and you can't get it done !!! Well remember you are using Microsoft products, so don't be surprised that they don't manage normally to let you have two windows beside each other. Well but there is a hard way to do this :
Open the first workbook any way you want.
Start a second instance of excel. either double click on shortcut to excel.exe on your desktop or through windows start button | run, then type: excel and hit enter. Then file|open the second workbook.
Now files are separated and you can have them beside each other ... Siiiiiigggggghhhhhhh :-S