NFSUnlimited.net

i have problem when edit the game.. i want to replace punto with monaro at the start .. i manage to do that with hex editor ( change the memory of game )but after i buy n went to safe house, the car still unlock ?? and the car slot missing ( i mean there is no punto in car lot
and i cant use fix checksum.. any guide to do the check sum thing ??

will it work with modloader ??

(sry my english are not so good )