[Kitten]

pawn Code:

new dialogstring[stringsize];
strcat(dialogstring,"Hi\nHi\n\Hi\nHi\nHi\nHi\nHi\nHi\n\
      Hi\n\Hi\n\Hi\n");
ShowPlayerDialog(playerid, 29350, DIALOG_STYLE_MSGBOX, "Server Rules", dialogstring, "Accept", "Decline");