@skurk
CHM is Microsoft's format for .hlp files. Kind of like a binary version of AmigaGuide 
Here's some technical specs on the format. Far from complete, but it's a start.
Thanks for the information you provided
@bigdan
Amigamance : what special .chm file you need ?
I can't say that i NEED one. I just came across with a few of them.
You've lot of ebooks ?
No. I have found some of them in torrent indexing sites.
All Linux and MacOS X viewers seems use CHMLib that was not yet ported on AmigaOS / MorphOS i guess...
Nothing surprising...