formatting timestamp

[Jon]

I'm trying to add the timestamp field as an "additional field" when I send my
form results to my excel database. However, when I add this field and map it
against the database column, I get the following error message: "The type of
field "Timestamp" does not match the type of column "update_time" in the
database. Modify the field mapping to fix." I've tried to format the excel
database column as a time field but I'm guessing the exact format does not
match the format being passed to it in Frontpage. Any suggestions how to
overcome this issue?