... нашел "открытую" ссылку на system requirements для NAV 2009:

http://www.microsoft.com/dynamics/nav/product/systemrequirements.mspx

Основная выдержка:

Client operating system
(Role Center client or Classic Client)
 
 Operating system options:

• Windows Vista Business Edition, Ultimate Edition, or Enterprise Edition with Service Pack 1 or later
 
• Windows XP Professional Edition, Service Pack 3 or later
 
• Windows Server 2003 with Service Pack 2 or later
 
• Windows Server 2003 R2 with Service Pack 2 or later Windows Server 2008
 
 
Server platform
(Microsoft SQL Server option or Microsoft Dynamics NAV Database)

 Server platform options:

• Windows Server 2003 with Service Pack 2 or later
 
• Windows Server 2003 R2 with Service Pack 2 or later
 
• Windows Server 2008
 
• Microsoft Small Business Server 2003 R2 with Service Pack 2 or later
 
• Microsoft Small Business Server 2008 or later
 
• Windows Essential Business Server 2008, Standard or Premium
 
 
Database
 
 Database options:

• Microsoft SQL Server 2005 with Service Pack 2 or later
 
• SQL Server 2008 Express, Workgroup, Standard, or Enterprise
 
• Microsoft Dynamics NAV Database Server
 
 For single-user installations:

• SQL Server 2005 Express, Workgroup, Standard, or Enterprise with Service Pack 2 SQL Server 2008 Express, Workgroup, Standard, or Enterprise
 
 
Browser

 Browser options:

• Windows Internet Explorer 6.0
 
• Internet Explorer 7.0
 
 
Microsoft Office system

• Microsoft Office 2003, Service Pack 3 or
 
• Microsoft Office 2007, Service Pack 1
 
 
Hardware resources
 
 The minimum hardware required to install and run Microsoft Dynamics NAV 2009 includes:

• Client hard disk space: Minimum 30 MB-250 MB, depending on client option
 
• Server hard disk space: Minimum 500 MB, depending on server option
 
• Memory: Minimum 1 GB
 
• CPU: See operating system requirements