IIS6 : The current identity (NT AUTHORITY\NETWORK SERVICE) does not have write access

The current identity (NT AUTHORITY\NETWORK SERVICE) does not have write access to 'c:\WINDOWS\Microsoft.NET\Framework\v2.0.50215\Temporary ASP.NET Files'.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Web.HttpException: The current identity (NT AUTHORITY\NETWORK SERVICE) does not have write access to 'C:\WINDOWS\Microsoft.NET\Framework\v2.0.50215\Temporary ASP.NET Files'.

You can grant access to this account explicitly using the aspnet_regiis -ga switch, for example:

C:\WINDOWS\Microsoft.NET\Framework\v2.0.50215>aspnet_regiis -ga "NT Authority\Network Service"

Hope this helps