Toolbar Command Button

I am running Excel 2003 and in my workbook I created a macro and assigned it to a toolbar comman button, "Copy Filtered Data". This macro copies the visible data into a new workbook.

This works well but others in my company will also be accessing this workbook from a sharepoint and I discovered that when they open it this command button is not on their toolbar.

Would anyone know what I need to do to have this button load on the toolbar when the workbook opens?

Also, I would like this button to either unload or greyout when the workbook that this button is intended for is closed.