Fix an Excel file(repost)

Need help to fix a file that takes forever to open. I have a lot of content but I don't understand why the file is so big. also note that the file has Macros & cells with colors. I need the macros to work like they were before, the code of the macro is fine and does not need to be adjusted. I just want to open my file like i coudl before because now when i try with Excel 2010 it crash...and with Excel 2003 it will open but will take 20 minutes to open