Creating and maintaining namespaces

My company has created a new product. We have received our namespace and I have the task of converting our customers...

to the new namespace. I can't find anything on creating and maintaining name spaces. Can you point me in the right direction?

Once SAP has reserved the namespace for you, and released the namespace license key, use transaction SE03 (also reachable from SE09 or SE10 from Goto->Transport Organizer Tools). Under Administration, in the tree on the right-hand side, you'll see "Display/Change Namespace." This will allow you to maintain your namespace. From Help, you can go to Basis->Change and Transport System Namespaces and Naming Conventions.