When trying to connect to the WaspTime web module, if you get an error page saying "HTTP Error 500.19 - Internal Server Error", there could be an issue with the ASP.NET role in your IIS configuration. To make sure the ASP.NET role is added correctly, please follow the steps given in the Microsoft knowledgebase article "Running Web Applications on Windows Server 2008 with IIS 7.0 and Visual Studio":
The article is written for Server 2008, but the steps are very similar for Server 2003.