Changing Aspnet Version on IIS5 ou 6 with aspnet_regiis
You may already have had the following message while creating a new virtual directory or trying to change the aspnet version :
Changing the Framework version requires a restart of the W3SVC service. Alternatively, you can change the Framework version without restarting the W3SVC service by running: aspnet_regiis.exe -norestart -s IIS-Viirtual-Path
Do you want to continue (this will change the Framework version and restart the W3SVC service)?
The problem is how to get the IIS-Viirtual-Path, easy once you know it :