[AccessD] Basic Form Questions

Hi there,

I have 2 questions and I was hoping one of you generous and intelligent
people could help me.

1.  In a form I have a combo box that I use to as a lookup.  For example, my
form holds customer information and I use the combo box to choose a
paticular customer.  When I choose this customer, it is his/her information
that I see in the form.  How do I get this combo to default to a blank?
Right now it shows the name of my previous search in the on screen control
which can be confusing.  I want it to remain blank until I choose a customer
from the list.

2.   I have a form with 2 subforms.  The main form is customer information,
subform 1 is insurance policies that customer holds, and subform 2 is any
dependents that customer may have on a particular policy.  When I add a new
policy for a customer (subform 1), I have to go to a different record and
back before Access will allow me to enter data on subform 2 (dependents on
that policy).

Any ideas would be wonderful!  Thank you,

Jamie