Custom screen saver PW3 [French?]

Hello !

I need some help i'v jailbreak my kindle PW3 to install custom screensaver but english is not m'y native language and i have some issu to understand what i have to do.

I read some post about KULA and MR Package, i'm scared to do it wrong, so if some one could help my i will be very nice, (in french if possible ? xD)

Thank you :)