Change font of the list of titles, names, dates etc

Does anyone know how to change the font of the list of titles in DTP 3 (names, tags, flags, dates etc.)?
At the moment it is a proportional font which gives you an irregular view of the list.
In DTP 2 it was Courier, so no problem.

This wasn’t the default font in version 2 actually. However, in version 3 only the size can be choosen (and this is also used by e.g. search results, See Also & Classify or icon view)