This setting works for .NET Framework 1.1, but not for .NET Framework 2.0. 
What am I doing wrong?

Configuration Error
Description: An error occurred during the processing of a configuration file
required to service this request. Please review the specific error details
below and modify your configuration file appropriately.

Parser Error Message: Unrecognized configuration section machineKey.

Source Error:


Line 100:-->
Line 101:
Line 102:<machineKey
Line 103: 
validationKey="7EC1B2AF32F7D52D23B82EA5AE0BF21E74F29614196ADF056D22C0B5D731694D58A69CE4A54064A0B4357AB61EA10888239753CB1830A8AC14F327D3FEF017A5"
Line 104:  decryptionKey="A90356BA4E99B59B393AFE1624A126446AF600F5F5766662"


Source File:
C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Config\machine.config    Line:
102

--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET
Version:2.0.50727.42

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