Simple dialog box?

I wanna make a dialog box, start dialog when I press a button while collide with another NCP (and the player stops to move), and close dialog when I press the same button (but I don't want to show text at once. Only in sequence). Can anyone help me, please? Or send a link? Thanks!

For a typewriter effect, have a look at the FAQ.

For everything else, something like this:

GlobalVariable Clicked = 0

On key X pressed:
Player is overlapping object:
Clicked = 0:
Player is [not] moving: (press i to invert conditions)
-> Set Text to X
-> Set Clicked to 1

On key X pressed:
Clicked = 1:
-> Set Text to " "
-> Set Clicked to 0

Thank you! I found it! <img src="smileys/smiley36.gif" border="0" align="middle" />