that's it I have it running and working. But not for the document I received for my tests.
I haven't brought it, it was sent by the publisher for testing on the nook, so I wonder if I can decrypt it. The key I get from the script isn't attached with the ADE local installation and then it's useless if I try to use it on another document. Am I correct ? thanks.
After further investigation the document seems encrypted

I've now decripted it and converted to epub, I'll see it on the nook tonight

and I'll let you know.