Plugin to extend Gravity Forms with a new field to check domains -- 2

I need a plugin that will extend Gravity-Forms with a full featured new field to check, if a entered domain name is available or not. As an example you can a look at this small script that will do a domain check [login to view URL] Requirements : - plugin that will extend Gravity Forms with a new field 'Domain Validation'. - must use the new Gravity Forms plugin and field structure - after a user enters a domain-name the sript have to check if this domain is available or not (so the user can register this domain or not) - must work with all country domains (tld's) - must work with all other tld's (like .info, .biz, .org, .com ......) - field entry must be stored at the database as any other Grafity-Forms field (not the result of the validation) Milestone will be released after the full work ist done.