Session Drummer Help File

The help system in Session Drummer is aparently broken.  I found the chm file (the Windows Help File) for it but it also seems to be broken. 
 
Is there some where that I can get info on how to work with Session Drummer other than the video's.
 
OK got the chm file working but still not enough detail.  i.e. How do you assign multiple sample to the different keys...I assume there is a drum map but changing the one in preferences does not seem to effect what drum sounds are played.
 
Thanks In Advance