I've been trying to work with an excel file that was made on a PC in Excel 2008 and emailed to me. I have Office 2004 for mac and am working on a Macbook with Leopard. I can hardly scroll around on the document without sending my macbook into overdrive and the program will often just freeze or close. The file is in xls format. What can I do to be able to work on this file on my macbook more smoothly? Update I can get or setting i can change? also. . . I had saved the file in microsoft 2003 format . . . but my mac still struggles with it.