Long ago MSFT figured out that it was a very bad idea to run commands from the web browser. It may no longer be possible to do this.
I attempted to insert the following hyperlink inside a webpage, but it didn't work:
rundll32.exe SHELL32.DLL,SHHelpShortcuts_RunDLL AddPrinter
However, it did work when I pasted it in the Run box, and it opened the Add Printer Wizard in Windows XP.