If you are planning on getting a new computer, you will need to uninstall the software from the old system.  This will then free up the Registration Code, so that you can install it on any other computer (depending on how many computers what your license allows).

To uninstall the software go to the Start Menu, type in Control Panel and Left click it at the top of the list.

Find Programs and left click Uninstall a Program

Once this opens, find your MTU product and select it.  Uninstall the program while your computer is online, to free up your Registration Code.

Once you have removed it, then you can reinstall it on another system right away.