QuickBooks Support - System requirements for QuickBooks 2012 and Enterprise Solutions 12.0: http://support.quickbooks.intuit.com/support/Articles/INF16393 *Database Servers:* * *Windows*: natively installed <http://community.intuit.com/posts/what-does-natively-installed-mean-operating-system> Windows 7 or Vista with UAC on, XP (SP2 or later), Windows Server 2003, Windows Server 2008, Windows Server 2008 R2, Windows Server 2008 - Terminal Server Config., Small Business Server 2008, Small Business Server 2011