it depends if you have themed controls turn on.
I actually like them turned on, as it give the 10 year old looking software
a fresh new look.
You can see some screen shots here, and one does show a screen with sunken
fields..and in a2003, they are gone.
http://www.members.shaw.ca/AlbertKallal/Atheme/index.htm
The setting can be found in tools->options, --> Forms/Reports tab, and there
you find
[ ] Use windows themed controls...