You don't need:
using SD.LLBLGen.Pro.DQE.SQLServer;
that, because that's only needed in the generated code.
You should add a reference to the DBSpecific project to the Sqlserver DQE assembly, however that should already be there.
So:
- to the dbgeneric project, there should be a reference to the ORMSupportClasses (.NET 2.0 one) assembly
- to the dbspecific project, there should be a reference to the SqlServer DQE assembly (.NET 2.0 one, not the CF.NET one!)
- to your own project (e.g. webapp, winforms app, the one where you use the generated code) you add a reference to the two generated projects (DBspecific and dbgeneric) and you add a reference to the ORMSupportClasses (.NET 2.0 one).
Is this the case in your solution?