I converted VB.Net 1.1 application and web service to VB.Net 2.0. Now I'm having problems accessing the web service from the application. When I try to update the web reference, I get a "Discovery Credential" dialog box asking me to supply the credential information to access the given url. I've never encountered this dialog box before, and I can't seem to enter a user name and password to its satisfaction.

When I try to add a new web reference and select the correct web service on the local machine, I'm told that I'm not authorized to view this page, and get the following message:
"Unable to cast COM object of type 'System.__ComObject' to interface type 'EnvDTE.IVsExtensibility'. This operation failed because the QueryInterface call on the COM component for the interface with IID"

If I open the web service in Visual Studio 2005, I'm able to run any of the web methods.

Any ideas as to what I'm missing?

TIA,
Gary