Conditional formatting, or just selecting the field and using the inspector or formatting tool bar to specify font, size and/or style won't work for this situation.
Any formatting applied directly to the data in the field or pasted in with it supercedes formatting specified for the field object on the layout.
Instead, define this auto-enter calculation on the field:
TextFormatRemove ( Self )
and clear the "do not replace existing value..." check box.
Then any formatting is automatically stripped from the data in the field when the user exits the field and the formatting specified for the field object now can control the appearance of the data in the field.
Excellent. This worked. Thank you for the quick response.