This is the link to his website:
http://www.soniclight.com/constable/notes.htm
As you can see, it is offered free online in .PDF format, as well as several other formats.
I purchased his bible commentary to use with my Treo/Palm; in the .PDB format.
Even now, with my iPhone, I can use his commentary with the new iSilo program.
It would be nice, however, not to have to switch programs to read the commentary.
Thanks again for a great program.
Jeff