can you submit variable to a database in a from verification function?

I have a script that submits values from a form to itself. It is processed on the server side and requires alterations to certain database information. after it has inserted the new information to the database I then want to submit the form to a third party and have the user who submitted the form go to that third party. Basically I want to database information on my server and submit the posts to another. Has anyone done this before with the 6.x forms api?

Thanks for any help,

Mike