From the Community Manual (partial reply only).
DDE Data Source - Selection.
On the intraday form. You need to switch from QT to DDE, and then the settings for DDE will show.
Q. How do I configure the DDE, is it possible to use it? how? I have a DDE link, it works perfectly in Excel... how do I link it to FC Charts? If I can't use DDE fine... how do I use it with Excel? I use Vista/Excel 2007
A. From Simon.) FCharts has a built-in Excel link on the Intraday form. It uses the Excel object model instead of DDE, and you should be able to see an example XLS file in the FCharts folder which contains more information plus some sample lines of data.