Hi Devilman, sharing workbooks isn't new to XP, it's been around. It works pretty well, although with heavy use we've seen some corruption problems. When you set up a shared workbook, more than one person can enter data into it at the same time. You can set options for handling conflicting saves (two people trying to save the same cells at the same time). Excel makes it pretty easy to set up, so give it a test run and see if it's something that would be useful for your particular situation.