I have recently received a couple of emails asking me for help with starting a Web Service project when using Visual Studio 2008. Both my correspondents had previously been using Visual Studio 2005 and had been used to adding Web References.
In Visual Studio 2005 a web reference would be added from the Project menu as in the image below.

The URL for the Sage CRM installation would be entered and the web reference was complete.

BUT in a new Visual Studio 2008 Add Web Reference seems to have disappeared!

"Add Web Reference" has not disappeared but it is hiding. This is because "Add Web Reference" uses .Net Framework 2.0. conventions and technology.
If you want to add a Web Reference in Visual Studio 2008
Use the Add Service Reference option from the Project menu

And then click the Advanced... button to open the Service Reference Settings Screen.

You can now click the 'Add Web Reference' button which produces the familiar screen above.