>I haven't worked much with ASP to know what debugging options are available. Is there a window to watch variable values? Can you use a MessageBox? Can you write it (and it's data type) to a file?VS has full ASP.NET debugging (even better on VS 2005 that has a local pseudo IIS {localhost}). It has full step-by-step debugging with local windows, watch windows, etc. etc.). No MessageBox in ASP.NET as that is a Windows client function not a server (ASP) proc.