I found IT!!!!
Hello sir,
after many many algorithms , trials and researches, i finally found a way, to entcript and decript those file. Attached, is one of your *.CL_ file decrypted. Since i have invested a lot of time to write these codes, i hope , you'd like to work with me. I can give you the name of that compression format and a small package to convert the .txt file en *.CL_ files. I've already done it!!And actually, i didn't slept thsi night! I am going into bed now(11 AM in Augsburg-Germany)
Sincerely yours
Armand Moutchiho