we have a php auction site based on PHP pro bid and want to install an alternative payment gateway

(KNET) to the list of gateways installed / available
the KNET company provided us with java/JSP scripts to link to their payment server
we need:
1- installation of the KNET payment gateway on mainsite.com
2- Adding KNET as a payment gateway / option on site1.com (the PHP pro bid auction site)
2- linking site1.com SHOPPING CART to mainsite.com

( this so that we can link another site in the feature (site2.com) to the same payment gateway)

Payment should be paid only if every aspect of the new payment gateway installed working correctly

and perfectly with the phpprobid software

After completion of this project successfuly we might consider giving you VISA payment gateway

project to be installed the same way.
And feature projects / designs / modifications.