Center pop up window- SOLVED

Hello, how do get pop up windows to be in the center of any screen.

You should use HEScript to do that:

procedure ShowFirstPopup;
begin
 ShowPopup("mypopup", "popup1.htm", 400, 300, -1, -1, false, false);
end;

Notice the -1 and -1 above which will make a centered popup window.
For further info, see the help topic here: http://www.htmlexe.com/help/popupwindows

Thanks. Worked like a charm.