new PsiGate payment processor

[chrism]

I will be developing code to support PsiGate (http://www.psigate.com/), a Canadian payment processor, and would like to contribute back. 
Found this link http://www.idealso.com/civicrm/AUTHORIZENET_NOTES which will be helpful, but have a couple of questions:

a) what is the current design choice for information which should be in civicrm.settings.php vs database?

b) how do I start the process for contributing this code back? (haven't done this before!)

[Donald Lobo]

1. for payment processors all settings should be in the database. You will need to populate the civicrm_payment_processor_type table with information about psigate

2. I suspect we'll change our "include all payment processor" strategy for 2.0 and make them optional and folks can add the ones they need. We can chat about that once you have something working
lobo