See
"ASP.NET is supported on Windows 2000 (Professional, Server, and Advanced Server) and Windows XP Professional, for both client and server applications. In addition, to develop ASP.NET server applications, the following software is also required:
Windows 2000 Server or Advanced Server with Service Pack 2
Windows XP Professional or 64-Bit Edition
MDAC 2.7 for Data
Internet Information Services
Note XML Web services created using ASP.NET support the same platforms supported by ASP.NET. XML Web service clients, however, are supported by all platforms supported by the Microsoft .NET Framework.
For more information, see .NET Framework System Requirements."
.NET Framework System Requirements says
"Server
Microsoft® Windows® 2000 Professional with Service Pack 2.0
Microsoft® Windows® 2000 Server with Service Pack 2.0
Microsoft® Windows® 2000 Advanced Server with Service Pack 2.0
Microsoft® Windows® XP Professional"
Forms/Controls Resizing/Tabbing Control
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