The easiest way to open a document, program or URL is to use the Windows API ShellExecute() function. Thanks to this function you can execute almost everything in Windows.
uses ShellAPI;
…
(* sObject - (string) the program, document, URL, … that you want to
** open. This can be:
**
** a document - ‘C:\My Documents\Tips.txt’
** a program - ‘notepad.exe’ [...]
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