Buggabill --

Thanks so much for your replies. They are most helpful for me (a learner) on a number of levels...First, there are several new bits of code that I have not encountered previously (e.g., ".=" -- not easy for me to grasp, but I think I've gotten to "second grade" on it now). Secondly, the overall concept, though simple to you, is new to me and I've gone through everything step-by-step.

So I'm still at work on this -- just wanted to say thanks for now.

Dave