Dear Sir,
I'm certified by Google in Analytics and AdWords. Recently I have done some projects related to this area. For hotels, where the tracking cookie had to be placed in the main site and also in the booking engine.
There is no problem in showing you how to define the cookie and placed it correctly. Also I can prepare you a document explaining how to obtain the tracking cookie (it is a bit different from the GA usual tracking cookie) and where to place it in the page; in fact that's what I have done with my other clients.
Regards,
Miguel