help with picture gallery

Hi!!1
I´m new in Unity i want to make a picture gallery in GUI.
What i want to do is to declare an array of “pictures” that shows in the screen all pictures fixed to the window dimensions, with same spaces between them and with scroll if needed.
Then if i make a click in a picture it open a new “pop-up” window with the same picture but bigger.

If anyone have an example of this or can help me. It would help me a lot.
Thanks

A 2D picture gallery in the 3D engine called Unity3D seems like an awkward thing to do…

Anyway, going here might answer some questions you have.