Hi Jeremy,
Sorry for the delay before responding, got side tracked ;-)
I can get the list of the CAD Links and the file name therefore, indeed, I could use AutoCAD and MicroStation to get their nested references but then, would you know if there's anything (couldn't find anything) to find out if the link is an AutoCAD or a Microstation file ?
the reason is that if it's an AutoCAD file, I don't want to waste time starting up MicroStation and vice-versa....