[xmonad] Key repetitions (begginer)

Hi, In Metacity, I used to have disabled the option to repeat a key after some time of pressing (i.e., you press 'e' for some time and get 'eeeeeeeeeeeee'). How can I do that when using xmonad? Should (can) I do that using X itself? Is there a "xmonad way" of doing that sort of things? Thanks, Maurício