I don't think I was inferring that I couldn't rename the fields, I was just saying that the task was a big chore in building the model.

There are no tools/wizards to help you accomplish the task. If you have the same field in six tables you have to do it six times. Would be much better if it had a data dictionary, or refactoring like there is in Visual Studio 2005, and you only had to rename the field once.