Where to store data/settings

Where do i should put the data or the settings of my module.

Because the module uses external user autentication, i need to allow user to store the credentials.
A cool site is database, but i dont figure out on what table do i need to store.

Do i need to create a new table?
Can i use settings table?

Regards.

what kind of settings/date you need to store ?

Basically the freedns manager credentials to avoid ask everytime.

freedns is NOT part of the CWP installation, this are standalone DNS servers.
http://freedns.centos-webpanel.com

Im sorry.

Im the guy building freedns connector PLUGIN between cwp and freedns.
The idea is to auto-sync custom dns entries from local "named" to the freedns system, commit them.

I think deeply on that, im sure the database is the safest way to store such credentials. Don't?

Even if freedns is not part of, is a perfect pair for CWP on single IP hostings, also a good service even if you can run your own dns.

Regards.

EDITED: I've deciced to put it on database, also editable.