userForm assigning values

Howdy, again:

When starting up my UserForm, I'm trying to set a value within a listBox, using a command like userForm1.lbSelectDriver.value = "Bob". That selection is within the list data so the listBox shows "Bob" when the form is displayed. However, to make the selection "valid", it seems that I have to enter the listBox and "jiggle" the selection (move the cursor to a different selection and then back to the one I want). Should I be setting the desired value on the basis of listIndex? If so, how?

Any thoughts.

TIA.

Bob