The problem you're running into is that Access doesn't do "times". It deals
with a date and a time during that date, but if you want to enter something
such as a song runs 3 minutes and 23 seconds, that is not considered a
"time". A Date/Time value is a particular point in time. The example is an
elapsed time. You will need to break it apart on the delimiter, in this case
the colon, multiply the first part by 3600, the second by 60, and add all
three together to get the value in seconds then use that value for your
formatting. It may be easier to create three different fields, place the
boxes next to each other on the form with a label between them that has the
colon. Format the label and boxes to look the same and set them so close
that you can't see the boundary between them. You may also want to use the
Auto Tab property of the textboxes so that you don't have to press the tab
key go move between them.