iphone image browsing application

[coulombos]

hello guys and girls :-)

i m new here and i m new in the iphone's world and have some questions.
i would really appreciate any answer.

well, i m trying to implement a small image browsing application:
the application should look like in the image attached.

explanation: let's say i have 16 images, 4 of them are shown on the screen of the iphone and the other 12 are outside, the user cannot see them until he navigates using his fingers or the accelerometer: 4 are above and 4 to the right and for to the left.

my problem is that i dont know exactly how to do this:

do i need a uiscrollview or how can i put the images on a "grid"?
can i put more than one image on a scrollview "page"?
are the images just uiimage or do i need to put everyone in a uiimageview if i am planning later to zoom on everyone?
can i use the accelerometer to navigate?

all this question are making me really crazy and it would be really nice if anyone could answer them!!!

thank you in advance