Dealing with the numeric keypad's decimal separator key

Hello,

I was wondering if there is any support or advise on dealing with the use of the decimal separator key that one can find on the numerical keypad. Depending on the country (and thus locale I assume) it should either translate in a comma or dot (as you probably are aware of).

In our case, hitting the key produces a dot in a decimal/float fields whereas users are expecting a comma to appear. At least that is what their favorite spreadsheet tool seems to do. Can we do something to cater for this expectation?

thanks
jan