Hi,
To launch IE for example, you would use:
var oIE;
oIE = new ActiveXObject("InternetExplorer.Application");
oIE.Visible = true;
oIE.navigate("http://www.infopathdev.com");
To launch InfoPath, you would use:
var oApp = new ActiveXObject("InfoPath.Application");
and so on...
Hope that it helps.
Regards,
Franck Dauché