You do not need to uninstall anything. Click on your windows start button > All programs or Programs > NewViews 2.0 > Register. When the registration screen appears, call our support line at 905-946-9460 and state to the support representative that you would like to register NV2 on yur laptop machine.
Check the paths that you are exporting to in NVEXPORT and ensure that it is the same path you are importing from when you run the NV1 Import program. I believe your paths are different.
I need to know the exact error message that you are receiving before I can answer your last question.