Hacking Biohazard HD Remaster (PS3) .ARC (Translate)

[xujozer]

Hello guys, I'm trying to understand the Biohazard files, the conteiner have the .arc extension, and there a possibly .zlib compression. I used Offzip to extract, and extracted two files: EventMes_e106_eng.dmg and RoomMes_r106_eng.dmg, two text files, so far so good.
So, I used the compression .zlib in autoit (zlib.dll), but the structure became different, freezing in-game test...
Testing without compression, freezing too...

(freezing only happens in the part of the edited file, firsts dialogues.)

Here is some information about the file we got:

Endianness -> Big Endian

*HEADER 16 BYTES*
Signature: {0}SFH
Unknown: 0x00010001
Size ARC: 0x00000F4F
Unknown: 0x00000000
*******************
*ARC*
File Signature: {0}CRA
Version: {0x00 08} = (8)
Number of Files: {0x00 02} = 2 Files
---------------------------------------------------
For each File:
File Name: 64 Bytes
Code of Extension: 4 Bytes (0X242BB29A) = .dmg
Size Comp: 4 bytes (0x00000179)
Size Decomp: 4 Bytes (0x00002EEA)
Offset (-0x10): 4 bytes (0X00000058)
---------------------------------------------------
For each File in pack:
Math "Offset" += 0x10
Go To Offset
Read "Size Comp Bytes"
---------------------------------------------------
"Size ARC" += 0x10
Go to "Size ARC"
Unknown Bytes - 32 Bytes

Our objective (my group) is to extract the .dmg to translate the dialogues, and then reinsert them in .arc.
If anyone knows how works these .arc files, please help us.

File:
http://www.mediafire.com/download/qqb7irrloxhr7qf/mes_r106.arc

PS: In each .arc file, has some bytes who point to the end of the file that appears to be md5: