Just had a heart-attack but now I'm ok. I have a map in ArcGIS that uses several joins to link up by statistical boundaries with the data stored in a DBF file. I realized I was using the wrong score, and needed to update it. Rather than do all the joins and symbology over, I opened the dbf file in Excel and changed the score field...That is I opened it up in EXCEL 2007 (THE HORROR!!!). Sure, it opens up fine, but when you try and save to a dbf, it doesn't let, or even have the option anymore. Curses! Luckily, the interweb had a solution for me. Save the file out to an Excel file (xls instead of xlsx just to be on the safe side), open it up in ArcCatalog (can do this in ArcMap as well), then simply export it to a dbf file. Everything should be the same as before.