How to: Change the Default Location for Projects
You can change the path where new projects and files are created by using the Options dialog box. Your existing projects remain in their current location. Web-related projects, such as XML Web services and ASP.NET Web applications, are not affected by this setting. The default Web server is based on the most recently used server.
To change the default save location
On the Tools menu, select Options.
From the Projects and Solutions folder, select General.
In the Visual Studio projects location text box, enter a location for files and projects.