data migration problem from sybase to timesten

Hi all,
I want to know about data migration from sybase to Times ten -
actuly at first I had created all the tables in Timesten data store
and then using a bcp script to retrive all my data to flat file and
then trying to insert it into timesten data store using Timesten
ttBulkCp utility ..
it is working fine with the tables that are not having date field,
actuly It is asking to put the date time in a perticular format in
order to insert it to database. in my flat file date time format is
like - Dec 12 2007 12:20 AM.
I had also tried to insert it by using -dformat and -tformat flags
in ttBulkCp utility but of no use.

Thanks,