Sorry for my state of confusion, I was mixing up the online booking bonuses and echeck in bonuses. I remember, in the past, NW offered these echeck in bonus miles periodically, I remember very well I got one (and I think I may have gotten another one, say early 2001 or late 2000)...until this happened to me again on Feb4th when the machine told me again to "contact an agent"...
I hope that clears it up, my fault.
George