How to create a modul system for a cms?

Im building a CMS (ASP.NET C#) and I am currently looking at how to implement a module system. How is it done with most modularized systems on the web? The most important thing is that I dont want the...

DataGrid In Java Struts Web Application

After scouring the web I have edited my question from the one below to what it is now. Ok I seem to understand that I don’t need all the capabilities of excel right now. I think i am satisfied having...