No way :(
As I also need a french rom, I looked to a solution to extract a rom.
On an article here explaining all the needed parts to upload an Hermes, I've seen that there is ways to do a dump of your rom but not an extraction (so, you'll get only parts of the rom, not the complete rom).
So, if you're not a really advanced user (I'm a complete new user...), there is no way to extract a rom and install it somewhere else!
I'm waiting for my dutch MDAIII hope I'll get it soon (normally, next week!)