If someone has the same thread, just do what Windmere said, copy and Edit.
The FortJoy_CharacterCreation gonna stay in DOS2ModWrapper, after that you just have to edit:
"TUT_Tutorial_A" by the name of your level in DB_GLO_FirstLevelAfterCharacterCreation
"FJ_FortJoy_Main" by the name of your level in DB_CharacterCreationTransitionInfo
"TUT_Tutorial_A" by the name of your level in DB_CharacterCreationTransitionInfo
If you Don't want the cinematics d'ont delete the Strings, just let them empty : ""
=)