If you are reading this help document it means that you have already installed the program. But any way it is useful to know several tips.

If you have some previous version or edition (like Free or Demo) of the program and want to maintain settings and registration (for the Work or Upgrade edition) then just install the new version (edition) over the previous one to the same folder.

If you uninstall a registered program then registration is removed. To activate registration you have to activate registration key again.