DBI::Pg Question - new user

[JACOB PETRIE]

I am new at using DBI.  I would like to have a form that order data can be entered in, 
and when submitted the user will be given a reference number from the database.  The 
reference number is set-up as a sequence in the PostgreSQL database.  How can I pull 
this field after the data is submitted?

Any help would greatly be appreciated.

Thanks,
Jacob
[EMAIL PROTECTED]