
Point it to the acrobat.exe in program files) and add a /n switch infront of the path. Make a short cut (call it anything initially, acrobat.exe) So no option to start new window upon each execution. However you cannot add switches like "/n, /t, /p" to this entry. when you type acrobat in the Start -> Run command, it starts acrobat because there's an entry in the Registry (here: HKLM\Software\Microsoft\Windows\CurrentVersion\App Paths\Acrobat.exe), which tells windows to start this program.
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Which doesn't solve the problem of opening the file from "Start-> Run" However this only controls how the program opens when you click on the shortcut. The "folder option->file type" method usually works.

This might be a long post, with lot of reading, brace yourself :) Ok Bill, The last fix didn't work, so after much experimentation, I am ready to give out a workaround.
