To change the default browser in Visual Studio 2010 you can use the excellent World of VS Default Browser Switcher extension.

It adds a browser chooser toolbar (View –> Toolbars –> Default Browser Switcher) and ‘View In Browser’ options when .aspx files are right-clicked.

The Toolbar is especially useful for ASP.NET MVC projects as they don’t allow the standard ‘Browse with..’ right-click options

or…

The Visual Studio vsdoc file for jQuery 1.4.3 is now available here:

http://static.a2cdn.net/jquery-1.4.3-vsdoc.js

When debugging ASP.NET from visual studio and you are using IIS, you can disable the worker process default timeout by setting Ping Enabled = False in the web site’s application pool settings:

My current favourite Visual Studio theme is Brad Wilson’s Dark Visual Studio. It is not too gaudy, uses a nice font (Consolas) and is easy on the eye.
For pre-Vista/Win 7 PCs you need to install the Consolas Font Pack for Visual Studio from Microsoft.

Other Visual Studio themes can be downloaded (or designed) from the excellent studiostyles.info website.

Links:
Brad Wilson's Dark Visual Studio

Files: