Integrating ASP.NET applications and SharePoint 2007

Link DumpSharePoint 2007 - Built on ASP.NET 2.0MOSS 2007 - Creating an ASP.NET application in the _layouts directory using Visual Studio 2005Application Development on MOSS 2007 and WSS 3.0ASP.NET 2.0 Web Part Infrastructure and SharePoint 2007Write Custom WebParts for SharePoint 2007Using ASP.NET Web Part into MOSS 2007 Web Site