Remove registry info entries for all users in system or just owner? XP

[dgschnei]

Concerning Windows XP logo guidelines

We are wondering if it is required to remove registry info for all users in system or just the owner?

Our application enters user information in the registry during runtime.
(Not during the installation but at runtime.)
This information is entered to keep track of our users’ preferences.

These registry keys are located under HKEY_USERS\S-X-X-XX-XXXXXXXX-XXXXXXX-XXXX-YYYY\…..

We may have 5 or 6 users using our application per machine.
Each user has his or her own preferences.

Are we supposed to delete the registry keys under HKEY_USERS for each user when we remove our application?

Or are we supposed to delete the registry keys under HKEY_USERS of the owner user (the one that installed our application) when we remove our application?

If we do have to remove the registry keys under HKEY_USERS for ALL users when we remove our application, how can we do that?

The registry entries under HKEY_USERS\S-X-X-XX-XXXXXXXX-XXXXXXX-XXXX-YYYY\…Intergraph\... are exposed only to the user that is currently logged in.

Thank you