is it a numerical field or a text field? you can't store the '-' in a numerical field.
I usually go by the rule, if you aren't going to perform a mathematical calculation on it, it shouldn't be a number. Zipcodes, Social Security Numbers, PhoneNumbers, etc. How often do you add up zipcodes or SSN?
Leslie
Anything worth doing is a lot more difficult than it's worth - Unknown Induhvidual