the error I get is:
"Error encountered while doing lookup"
Thank you for your post.
Since these are not on the same network, there is probably at least one firewall separating the machines. Make sure that ports 5003 and 16000 are made available between the machines. Otherwise, you will not be able to pass information between the database server and the web server.
For more information, see chapter 2 (pages 22-23) of the FileMaker Server 10 Getting Started Guide: