Windows registry keys for applications for all users in machine

Question

If I install an application on windows XP and that application writes some keys to HKCU registry , then will those keys be copied to HKCU for other users?

I tried installing one application and verified some keys getting created in HKCU. Now I logged in into another user and I can find same keys in HKCU for that user.

Both the users were in same Administrator group.

I repeated the same steps in VMWare image of windows xp but I was not able to find the registry keys in other users in vmware image.

I want to know that is it windows feature to copy all registry keys in HKCU of all users?