Hi
Try this:
Each version of the .NET Framework includes a version of
the ASP.NET IIS Registration Tool (Aspnet_regiis.exe).
This tool enables administrators to specify that a Web
application be run under a particular version of the .NET
Framework.
The Aspnet_regiis.exe for version 1.0 is located at:
C:\WINDOWS\Microsoft.NET\Framework\v1.0.3705
\aspnet_regiis
The Aspnet_regiis.exe for version 1,1 is located at:
C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322
\aspnet_regiis
The Aspnet_regiis.exe provides two options for
registering Web application extensions:
Try:
aspnet_regiis -u
aspnet_regiis -i
HTH
Ravikanth[MVP]