Intuit QuickBooks 2012 Pro - Complete Product - 1 User Windows XP (SP3), Vista (SP1 inc 64-bit), 7 (inc 64-bit) All online features/services require internet access Microsoft Word and Excel integration requires Word and Excel 2003, 2007 and 2010 (inc 64-bit) Synchronization with Outlook requires QuickBooks Contact Sync for Outlook 2003, 2007 and 2010 (inc 64-bit)