registered user in Vista

Hello,
I purchased a laptop at Radio Shack and even though they stated that nothing had been registered on the pc (it was the last one and on display) I had to change the user account to my name from Radio Shack.
However, I have noticed that when I am installing software it is stating the name of the user is Radio Shack instead of my. Radio Shack told me that adding a suer account under my name and as the administrator and then deleting the Radio Shack user account would remove their name from this pc. But it still showing up when installing programs. Sometimes a program will have the user account section available to change the name but most do not.

I did find that it is located in HKEY_Local_Machine>Software>MS>WindowsNT>CurrentVersion... shows Radio Shack as the registered user.

Is it safe to change this or should I just leave well enough alone?

If I were to change it aside from making a backup of the registry first would I just right click on the "registered owner" and modify it to show my name instead?

This is running windows vista home premium.

Thanks!

 

Thanks for the help. I sort of thought that I could do that but wasn't sure and just wanted to be sure before I messed with the registry.

As for the user/admin account part - I did that a few days after getting the pc. I had called Radio Shack about that and they had stated that by creating a new user profile and making it the administrator account and then deleting the user account named Radio Shack would remove them from the pc entirely.

Thanks for the help!