How do you change the house icon name on a mac?

I bought a used apple powerbook g4 several years ago and have tried in the past with no luck. Now I would like to change the names. The little house icon is titled by his name and every time I look for folders, pictures, or anything, it's all linked to this name. Also, every program that was already loaded is registered in his name and I'm just wondering if it can be changed?How do you change the house icon name on a mac?The house icon name is also called your user short name. It can be changed by following the steps in the article linked below. As for the programs the previous owner registered to himself, you will only be able to remove his name from them by reinstalling and re-registering them.