CodeRush just come out with a free version of its well known and recommended addin to VS.
It provides stronger refactoring capabilities and also ease other tasks like browsing for files in a solution.

You can check it out and some more information here: http://community.devexpress.com/blogs/markmiller/archive/2008/10/27/announcing-coderush-express-for-c.aspx

C# version is here: http://devexpress.com/Products/Visual_Studio_Add-in/CodeRushX/

Another version for ASP.NET refactoring is here: http://devexpress.com/Products/Visual_Studio_Add-in/RefactorASP/

Have fun ;)