You need to be in your framework directory for this command to work.
To get there goto Start --> Run --> cmd
Execute this command: cd %systemdrive%\windows\Microsoft.NET\Framework\<ver sion>
On my system the command looks like this for the 2.0 framework: cd C:\Windows\Microsoft.NET\Framework\v2.0.50727
Once you have navigated to this directory you will be able to execute the command from your post.
hth.
-Doug
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