Calling a RoboHelp Topic from FileMaker 7

[savage]

How do you call a RoboHelp topic from FileMaker 7? It would seem you want to use the script step "Send DDE Execute." Is this right? I have RoboHelp HTML displaying my help topics in Netscape. To make the help context-sensitive, I want to call a particular topic from a particular FM7 window. For example RoboHelp has given the topic "Jurisdiction" the Topic ID "Jurisdiction" and the Map # 1. What would the Send DDE Execute step look like? What is the service name fo Netscape? What is the topic text? What is the command? Is Send DDE Execute the right script step? Thanks for any help.