How To Organize Code

I have an auto generated class file whit many partial classes (auto generated from an xsd schema). I use VS2010 and VB.NET.[code]I'm developing a part of and business application. The application is used for registration of persons data, invoicing, accounting, and so on. The part I'm developing is a reporting system to the authority via wcf services. In my part I will use VB.NET but the other parts of the system are developed in VB6. We use an SQL server and nearly all the business logic is located at the server side. Because I'm used to use VB6 its difficult to grasp all the OOP things I need to remember to write the code as it should be. In my part of the application I get an xsd schema from the authority and auto generate my schema class file from the xsd file with xsd.exe. I see that it's a much better solution that you suggest, but when I looked at my auto generated class file after reading your answer I see that every partial class has a MyBase = New line in the constructor.I can use this in a way, like you suggest? Sorry for not understanding this earlier! If I understand the behavior of MyBase correct, I can write [code]how should I generate the xml based on the xsd? I want to do this for multiple xsd schemas. Isn't it the a good solution to deserialize the xsd (with xsd.exe) to a class, create object of that class and populate it with data, and then serialize the object back to xml?