Dot instead of comma on numerical keyboard

I think the same problem sits in the German version of Windows 8. This way it is really annoying for example to enter a date or decimal number in Excel. The Numberpad becomes totally useless.

The Solution (sorry for German screenshots):

1. Open Control Panel (Systemsteuerung) with rightclick on the windows icon in the lower left corner of your screen.
2. Select the shortcut to change the format of Date, Time and Numbers (Datums-, Uhrzeit- oder Zahlenformat ändern):
3. Choose the Advanced Settings (Weitere Einstellungen):
4. Type in a dot instead of the comma (Dezimaltrennzeichen Komma --> Punkt):
5. Repeat step 4 for the Currency (Währung) tab.
6. Confirm changes with OK.

Hope this helps.

You can do this using AutoHotKey with the following simple script:

NumpadDot::.

Basically, because Windows is interpreting the number pad's . signal as a , in the Polish layout, you just have to rebind that keystroke to the standard keyboard's . command again.

You could also try the Microsoft Keyboard Layout Creator.

The utility SharpKeys manipulates the windows ScancodeMap registry key, which can map any key to any other key. You don't need to know the scancodes, SharpKeys figures them out for you. You just press the key you want to remap, and press the key you want to map it to, and it will write it to the registry. SharpKeys doesn't run in the background - the registry key that it uses is part of Windows.

Unfortunately, it's not documented to work on Windows 8, and not guaranteed 100% on non-US keyboards, but the underlying Windows registry key will still be there, so there is a good chance it will work, and it almost certainly won't hurt to try.