Where to get Logitech Mouse Receiver. (elite duo)

Ok here is the deal, I got a new Logitech MX1000 Mouse for Xmas, it is great. But my old setup was a Logitech Elite Duo with a really nice wireless mouse, thumb button and such.

I have to use the transmitter still for the keyboard. It seems like such a waste to toss out such a good mouse.

Anyone got any suggestions.


How would I get a transmitter/receiver.

I am sure I am not the first person to have this problem.

Here is what they look like