I have some general DNN application development/architecture questions. If this is the wrong place to ask, please point me to the correct one. I have worked with DotNetNuke version 2 in a cursory manner over the last year so I am really still a beginner. I would now like to improve my understanding of DotNetNuke and would like to start with the overall development approach that the DNN team is using for versions 3 and 4. I have been working mostly with C# and have been using what the VS .NET 2003 refers to as Single Solution Model applications where projects are within a single solution and reference other projects only within that solution. There are two other models that VS .NET defines – the Partitioned Single Solution Model and the Multi-Solution Model. It appears to me that DNN could be classified as a Multi-Solution Model. Is my understanding correct? I have been searching the documentation and this forum but cannot find any definitive explanation. Can you point me to some documentation that I may have missed? I am now working with DNN version 3 and VS .NET 2003 but will move to DNN version 4 and VS .NET 2005. Are there any important differences with regard to the development approach between version 3 and 4?

Thanks for the help,

G. Mitchell