Excellent article on migrated 2003 web projects to 2005
Brian Goldfarb points on
this article
with detailed instructions on how to migrate your VS 2003 web projects
to VS 2005. Having previously attempted some migrations using beta
versions of VS 2005, I can say that some of the issues I ran into are
addressed in the article. The particular one I had trouble with
involved having 2 web project files in my web app. This was a holdover
from some old work I was doing and not even necessary to be there
anymore, but was causing no issues in VS 2003. The migration wizard
attempts to convert each web project file in the project you migrate,
so you end up with duplicate files and references and it just gets
really ugly. There are also some good comments on getting a handle on
the XHTML validation warnings, which many projects are likely to have a
lot of in the beginning.