How can I break up an ASP.NET project into smaller sub-projects?
<p>I can't rewrite in MVC (at this time), but leaving it as one giant project is causing too many problems. I would like to make each of my 10 top-level folders into a separate ASP.NET project.</p>

<p>The code is currently written in ASP.NET 1.1 style (i.e. no master pages) but I can upgrade to any version of .NET.</p>
