: Windows XP Professional (SP2 or higher) or Windows 2000 Professional (SP4). Windows 7 is only supported in newer versions (WinCC flexible 2008 SP2/SP3). : At least 1 GB of RAM and 1.5 GB of free hard drive space. : Internet Explorer 6.0 SP1 or higher. Siemens SiePortal Technical Alternatives

Once you have legally obtained the installer, you face the operating system barrier. WinCC Flexible 2007

During migration, TIA Portal will require you to map the obsolete panels (e.g., an MP 277) to modern equivalents, such as the Simatic Comfort Panels or the newer Unified Comfort Panels .