Best way creating buttons

[rf-bug]

Hi all,

I'm a newbie on NDS programming and I have question.
What is the best way to create / use Buttons on the touchscreen?
Backgrounds, Tiles or Sprites?

I want to make an application where I need a Menu. Therefore I want to use bigger button which I can press with a finger. I think I need about 5-6 Button on the screen.
Can somebody tell me, which is the best way to do this Menu?

Thx
rf-bug