Je cite:
Scratches on the lower ( touch) screen
Due to the construction of the lower ( touch) screen on the Nintendo DS, it is not possible to replace its screen cover without special facilities and tools. As a result, we are unable to offer personal screen cover replacement kits for the lower ( touch) screen at this time. If the lower screen cannot be seen due to excessive scratches, you will need to have the unit repaired.
Vient du service client de Nintendo USA. http://www.nintendo.com/consumer/systems/ds/trouble_screen.jsp#scratches_upper
Alors arrêtez de vous imaginer des conneries, merci