Afaik, vb NET has NO normal VB. Net is NET simply put. Your only option is to import it, and then it will be converted to NET.
If you don't want to see NET, you can still open them in notepad, since all code is stored in text format.
The import guide will automatically use those old references if it cannot conver the code to NET successfully. However, it is recommended not to use those; instead use the NET framework. It is powerful and contains pretty much all the things in previous versions of visual basic, although with some limitations.