>How do you use Quickbooks to keep track of endusers??? The invoicing part I understand, but then how do you get the contact, serial, version, etc. into the "other" program???

That is something I am working on now. It's a registration service for our app setups. We will [also] be logging (hopefully very few) desktop error messages. An IIS ASP/VFP server will collect registration information, capture, log and route desktop errors and manage renewals. On-line help is another consideration.

We are also requiring our users to purchase a VFP license. It's a good value and should help with any data issues. Are you including a VFP license with your distribution package?