Page breaks and saving/printing macro (2003 to 2007)

OK, I'm upgrading to Excel 2007 from 2003. Now, I pull up some of my old spreadsheets that were made in Excel 03 and fill it with information then I use my macro to save and print and suddenly the page breaks go crazy, some of the tabs work just fine and some are completely off. Another effect is that the charts seem to resize, but only on the sheets where the page breaks go wrong. The problem only occurs when I use the macro, it didn't show up before then.

Is it the macro that's causing it? Do I need to update the language in the macro so that it won't do it? Or is it the Excel 2003 format, and do I need to just remake the spreadsheet?