This has nothing to do with VWD. Goto Start --> Run --> Inetmgr to open the IIS console and right click on the directory that contains your website and make sure that it is configured as an application. (This process will vary on Vista)
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Read this if you want to know how to get a correct reply for your question:
http://www.catb.org/~esr/faqs/smart-questions.html
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.: Wrox Technical Editor :.
Wrox Books 24 x 7
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