Some quetions about oscommerce (my webshop)

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I am fixing my webshop now, but I am new with all these things and having some trouble with it now. My webpage : www.shinyclothing.no on the norwegian version of the shop it show "demo shop" on top, I want to know how to change it and I want to edit the link name on information or add more in there because there are something more I want to add ...