Hi, I replied to your similar query on InfoPathDev.com: http://www.infopathdev.com/forums/topic.asp?TOPIC_ID=1113

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Greg Collins [InfoPath MVP]
Please visit: http://www.InfoPathDev.com
I am using an XML file as a data source from my cascading drop-down and
would like to include a N/A and other in the list of available
selections. I used
http://www.infopathdev.com/howto/tutorials/default.aspx?i=a37cdc1933854c01b708dc
4e99e84f8b
while building the drop-downs.
Any ideas on how to do this, or will I need to include N/A and Other
for each possible selection?
Thanks.