Time Formatting In ASP

I'm developing in ASP/VBScript using DreamweaberMX, w/ an Access 2000 DB as the
data source. The source of the data is coming from a third party, which I get as
a CSV and import into the database, updating it weekly.

Since I have no control over how the data is collected, I'm not sure how to fix
this problem, but here it is.

This is a database of movies and among the many fields I import is one for the
movie's length, expressed in HH:MM:SS. This comes into the Access DB as a
Date/Time format, which means all the dates, displayed raw in the DB, look like
"12:09:52 AM". Through data formatting, however, displaying it to the client as
HH:MM:SS is no problem. (Display "12:36:00 AM" as military time (00:36:00) tells
me the movie is 0 hrs, 36 minutes, 0 seconds long. Follow?)

But in an update form, which we'll use to correct errors (and there always seem
to be errors in the running times of movies), I can't figure out how to display
it in the HH:MM:SS format in an INPUT field and have it submit without throwing
a data type mismatch error. It seems to want to display as "12:36:00 AM"

Converting the field to a text type is out of the question at this point, so I
know I need to do some type of string manipulation prior to update. However, I'm
lost ...

Any ideas?