if you go into your .net version folder (like microsoft.net/framework/1.0.3705), there are a lot of .dlls in there. these are the assemblies that you can use to compile business components. They represent containers for classes that a person might use in their components. Not all of the assemblies are there. Only about 70 of them. Does anyone know how to import more assemblies to that folder? I need to use the System.Data.SqlClient assembly. It isn't in that folder, so I can't compile my components that use sql transactions. Is that assembly in anyone else's folder?