Multiple Copies of Windows Calculator

Finally figured out a solution!

UPDATE 2014

This has been tested on Windows 8 and 8.1 and works.

Using a VBS file will make the calculator instance keep focus.

Dim oShell
Set oShell = WScript.CreateObject ("WScript.Shell")
oShell.run "C:\Windows\System32\calc.exe", 0, False
Set oShell = Nothing

Just create a text file like calculator.vbs and copy/paste the above code and double click or link the file to your keyboard button.

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[ORIGINAL ANSWER]

Hopefully this isn't specific to a version of IntelliType. However I'm using IntelliType 8.2 x64 for Windows 7 with my Natural Ergonomic Keyboard 4000.

Once you have installed IntelliType go to Control Panel -> Keyboard then Key Settings tab.

Find the Calculator button in the Key Name column and click Configure. It will be defaulted to "Starts Calculator" now choose "Start a program, Web page, or file" and locate your copy of calc.exe which should be in your system32 folder. In my case it's "C:\Windows\System32\calc.exe"

Click "Finish" and it's now assigned and working as it did on previous Windows.

Now when you click the calculator button it will open multiple calculators instead of just bringing focus to an existing one.

As part of owning a business I do most of the bookkeeping. And having the ability to rapidly open multiple calculators with the calc button is great!