We have a company that is getting a new server that will share a File Maker Pro database with 5 Macintosh Computers and 5 Windows XP Computers. It will also share the data for Quickbooks Enterprise 7.0 and Retrospect Bacup for all machines. This server is a Dell PowerEdge SC440 with Windows SBS 2003. Do I install Active Directory, or without it and share the files? I am worried that if I install AD that I will have issues with sharing the files for the Mac computers?