>Eric and George,
>
>I changed values in HK_root and HK_LM and changes in one was refelected in the other. So I guess for my case it didn't matter which hive I used.
>
>Thank you for now I feel I understand the registry. I am sure with my new knowledge I will be able screw things up really good now.

Ken,

Let me echo what Erik said, "Careful". It doesn't take much to turn a computer into a paper weight if you do something wrong. It happened to me once. I'd also add, that anytime you're going to making changes in the registry, back it up. Some changes can turn out to be very hard to undo, should you need to.