I did find a kind of sketchy website that seemed to share some code on doing it, but I wouldn't touch that with a 10 foot pole.

There is no direct integration: they will need to shift to CyberSource (Authorize.net is owned by CyberSource). There is some “solution” floating out there but one merchant I worked with had a lot of problems with it.

Thank you for the speedy response - I am sure that's the solution I stumbled across that didn't seem all that great to me.

We use to use authorize.net for another ERP integration. Not a Netsuite integration though.