How to: Choose an Alternate HTML Editor in Visual Web Developer
The default editor for HTML documents and ASP.NET pages is the Microsoft Visual Web Developer Web development tool. However, you can specify any installed text editor as your Visual Studio 2005 editor for viewing and editing HTML documents.
To open a document in another editor
In Solution Explorer, right-click the document, and then click Open With.
In the Open With <Filename> dialog box, click an editor, and then click OK.
The Open With dialog box also includes the Set as Default option. Choose the Set as Default button to designate another available editor as your default editor for HTML documents.
To add an editor
In the Open With dialog box, click Add.
The Add Program dialog box appears.
In the Program name box, type the path to your editor or click the ellipsis (…) button to browse to the program.
In the Friendly name box, type a friendly name for the editor.