HURRICANE JOHN WINS!!
I remembered that I had "cached" a copy of Mobipocket 4.3 C.E. cab on an H/PC goodies disk. Just plopped in the cd, went to my comp/ moblie device and did a copy/paste of the CAB to the 720's storage card. Ding! no problem, works like a champ.
Ditto for the 820. I really wanted it on the 820, its a great reading platform.
Meanwhile back at the ranch, I'm trying to get OPERA 8.5 to work on either the 720 or the 790. I've been using it on the Axim and it kicks PIE's butt! Web pages automatically sized to fit the ppc screen is just tooo cool.
Thanks for the brain kickstart folks.