Simple Store problem

I added simple store and I wanted to add it to the navigation bar, but when I go to links and browse it's not listed. I was able to find it, but it was called Link 5. I want it to say "Store" not "Link 5". Also, how do I get the pictures out of the Photo Gallery and into the Ecommerce image browse? It doesn't use the same images. Furthermore, I don't have the original pictures saved other than in the Photo Gallery.

Brady