Kevin Becker (forum)
http://community.logos.com/forums/p/8745/69709.aspx
For OT word studies in seminary I used NIDOTTE and TLOT (in that order) for help. I have the print version of NIDOTTE. I would love to get it in Logos, however, Zondervan’s pricing scheme leaves a lot to be desired.
For these types of word study helps I recommend these two books.
Denise Barnhart
If you enjoy digging into the OT parallels (Ras Shamra, Canaanite, etc), the lexicon is a treasure to have on-hand. If however you’re looking for an in-depth theological discussion, TWOT would probably be a better choice.