I've been looking around for a piece of software that handles multiple domain name registrations with each signup. I have seen threads about signup scripts in the forums, most of them have been complete billing scripts, but I have yet to see this option.

Basically, I'm looking for a script that integrates the possibility to do a multiple extensions domain search (e.g. yourdomain.*), and which also lets you do a search for several completely different domains (domainname1.com domainname2.com) before completing the signup process.

I would love to see features like these being implemented in a billing script, but for now I'd be just as happy with any signup form that can handle these tasks.