Hi,
what you are looking for can be done using smart combo box,you can find
details at the below link,
http://infopathdev.com/webstore/detail.aspx?itemid=14.
Thanks.

Signature
k.Ramana Reddy
www.autonomysystems.com
> I have setup a form using several drop down boxes but I need to know if there
> is a way to ovreride the selections and allow users to enter there own text?
> All I get right now is errors if I try to enter anything but waht is the drop
> down box. Thanks for any help.