Other payment gateways for Fundraising

I need other payment gateways then paypal for the fundraising plugin. I thought it might be easy to adapt the paypal one, but I'm having a hard time making sense of it. What I really need is to integrate with FirstData, but I'd even take Authorize.net.

Does anyone have an example of any other payment gateway working with fundraiser that I could take a look at?

Cole - any news on the beta promised 5 months ago?

This was one of the main reasons I became an elite member.