Scrollbar for a big GUITexture please. (see the picture)

Hi.
I have a big GUITexture ( 256 x 1024 )
and I need to explain on the help buton
with a gui texture the map game.

How can I do what the picture says?
(down here please)

really thanks to any help.

I use the scrollView GUI element to do this kind of thing. Check it out GUI.BeginScrollView in the scripting documentation, it explains it better than I can.

HTH

I am new on unity, but know some .js (java)
some one can giveme some idea to start please, or some code please ?

thanks a lot
I will apreciate. thaks.

EricJ just gave you an excellent starting point: