SIMATIC PCS 7 V7.1 + SP2 Released for Delivery
http://support.automation.siemens.com/WW/view/en/44263415

Requirements
Requirements for installing and operating PCS 7 software V7.1 SP2
? Windows XP Professional Service Pack 3 and Microsoft Internet Explorer V7.
? With Web Client and Web Diagnostics Client installations, Microsoft Internet Explorer V6 or V7 is permitted.
? Windows Server 2003 (Standard Edition) Service Pack 2 or Windows Server 2003 R2 Service Pack 2 (Standard Edition) and Microsoft Internet Explorer V7.
? Microsoft SQL Server 2005 Service Pack 3 is installed automatically.
If the operating system is installed on the basis of Windows Server 2003 R2, we recommend that you do not enable the optional components of Windows Server 2003 R2. You will find the optional components of Windows Server 2003 R2 in the Windows Control Panel under Start > Settings > Control Panel > Add/Remove Programs > "Add/Remove Windows Components". You will find an overview and additional information on these Windows Server 2003 R2 options in Microsoft TechNet at http://technet.microsoft.com/en-us/library/cc785371.aspx (http://technet.microsoft.com/en-us/library/cc785371(WS.10).aspx).
If you use an INTEL network adapter, the latest driver must be installed. This driver is located on the SIMATIC PCS 7 DVD under: Additional_Products\Drivers\NETWORK\Intel\ Intel_LAN_v14.5.01_PROXP.exe.