This week, I have upgraded to Windows 7. I have spent hours to run VS 2003 on my computer. You should the follow this article in the specified order http://blogs.iis.net/bills/archive/2008/06/02/installing-asp-net-1-1-with-iis7-on-vista-and-windows-2008.aspx. After that, to run VS 2003 successfully follow the instructions in the following article http://technikhil.wordpress.com/2010/01/12/visual-studio-2003-and-windows-7-can-get-along-really/. For IIS modification http://blogs.iis.net/wonyoo/archive/2009/06/18/workaround-running-asp-net-1-1-on-vista-sp2-ws08-sp2.aspx.