Hi, Hilmar.

>> so the only solution can be changing the browser configuration...
>
>Unacceptable, as explained before. If I don't get a solution that does NOT involve changing the browser settings, I have considered giving the user instructions, "to search the entire DVD, open file so-and-so on the DVD". I may still have to do this.

I actually never used the PDF index you mention. If its extension gets associated when you install Acrobat Reader, there should be no problem, but it seems the browser is getting in the middle. Did you try it with IE or are you using Opera/Mozilla?

>You don't happen to know whether it is possible to do something like "ShellExecute" from the browser?

Not that I know of, but think that generally speaking it is very little what you can do on the client machine fro a browser, for security reasons.

>>Maybe you can change the PDX for an HTML page?
>
>I don't think so, because it has to be opened in Adobe Acrobat, or Adobe Acrobat Reader, to process the index.

Well, I'm not sure about the purpose of the index, but thinking in a list of documents (like a table of contents) it could be replaced for something that doesn't need Acrobat (until a document is selected).

Best luck,