thanks.
I tried rapidly but it did not worked : On XP, Adobe Digital Edition is an AIR Application and I can't drag the book.
I'll look at his more quitly this evening and let you know : maybe I missed something.

Anyway, the message I have when trying to open de .acsm on the Edge is not really user-friendly.
The file appear with a book icon so we may think it should be recognized ...

Mike