This is a software question. But involves hardware.

Is there software that will handle two separate keyboards and GIVE different results for some keys.

More specifically, can I have two sets of Function keys?
Remapping the function keys is, of course, possible. But I forgo the ORIGINAL purpose of a function key. Unless I switch back. Which can be a hassle.

Presently I already have a software solution, but I want something better. I want two keyboards. Each can have some keys either re-mapped or made into macros.
Example: Could you do this:
Have another keyboard, any old keyboard, in a USB port. All keys are normal EXCEPT the function keys. They may do something different from function keys on the main keyboard. (Years ago thee was a keyboard with EXTRA function keys. I don't mean that.) Just a normal keyboard in a USB port and a software package that will i catch the keystrokes and give new functions that have been assigned. . NORMALLY Windows does not do this. But I have see a site where somebody has done it. So he says.

But before I go trying it, please let me know if others have ever done this kind of thing and is it useful.

I have both XP and Windows 7 on the dell 1705 laptop.