How To Save Macro File Not Using .XLSM Extension

Hi Ignited Minds,

I would just like to know how to save a workbook that has macros in it without giving it .xlsm extention.

I mean i have seen files with macros with .xlsx extensions, however when i save a file with VBA codes it forces me to save it as .xlsm.

I work on office 2010.

Thanks in advance