I would like to put an application on my web page so users can type in a web address and know whether or not it is available. How do I build this, or where can I get a prebuilt script?

I know of PCNames, but I want to avoid using iframes, don-t want to link to another site if possible, and none of the prebuilt iframe scripts do what I need them to do.

I simply want an input box where users can type in a name (maybe even include a dropdown for .com, .net, .org, .name, etc.) and press submit, and then get feedback as to whether or not the name is available.

Any ideas?

Thanks!
- Multi