a turnkey script is a ready-made script that you just upload and it'll rock and roll :lol: Just kidding..... basically you first register with IAN.com as an affiliate (just put up a simple page as reference and apply to be an affiliate). Once your application is approved, you'll be able to login to your member area, where you have extensive documentation on the different ways in which you can use their reservation data in your web apps. If you dont want too much of a hassle coding, you can use the co-brand option..... something so easy that it can probably be set up in about a couple of hours.
But if you want to use their web services API, then you need to thoroughly go through the docs, and either code the application yourself or hire someone to do it for you.
dont get any turnkey scripts for this. here's why:
ian.com's api's keep changing (say every year or so) ... and each change will mean a corresponding change in the code. if you just buy a script (without on-going support), then there's no guarantee that you'll get the upgraded versions when you need them.
The best way is to code it yourself, and have fun and learn a lot, in the process.