Rebinding Numpad . (location 104) to regular dot (location 54)

How can I remap the numeric dot (key location 104) to regular dot (key location 54) in Windows 7? The key should always behave as a dot, regardless of the state of NumLock key. I'm using the standard 101/102 keyboard.

I'd like to do this without using any third party applications, or changing the Regional settings in Windows 7.

I know that I can (theoretically) get it done by changing the scancode map in

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout\Scancode Map

but I'm unsure on how to go about it. I'm thinking that this

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout]
"Scancode Map"=hex:00,00,00,00,00,00,00,00,02,00,00,00,34,e0,??,??,\
00,00,00,00

isn't that far off, I just need to know what to put in place of question marks. I've consulted Microsoft's Keyboard scancode specificaton manual, and the value for the Numeric dot is 53, but I'm unsure if I could pair it with e0 (due to undefined NumLock state).

Solution 1:

As it turns out, I was indeed close. NumLock state had nothing to do with it. I'd decided to go ahead with rebinding NumPad dot - 00_53 (inverse hex 53 00) to ordinary dot - 00_34 (inverse hex 34 00), and it works as I'd hoped it would. NumPad dot is always a dot, regardless of the regional settings.

This was achieved by creating a registry binary key called Scancode Map in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout.

The next step was to modify its data, which I did by typing this:

00 00 00 00 00 00 00 00
02 00 00 00 34 00 53 00
00 00 00 00

After rebooting, the NumPad dot acted as an ordinary dot.