As Matthew mentioned, all versions need to be activated.
There is no reason to uninstall a previous version, you should actually keep it around in case you run into some upgrade issues.
Your start menu should have a link to the NI license manager. It will tell you exactly what you have installed and even lets you activate what needs to be activated. 🙂
Message Edited by altenbach on 10-24-2007 11:48 AM