The potability of dual mouse control?

By default, the cursor co-ordinates in C2 are based on the computer's own mouse position, so plugging in a second mouse is useless. It will just influence the same cursor position in the same way. I'm looking for a method of having 2 mouses affect 2 different pairs of co-ordinates. Be it by a new plugin or by an obscure trick.

Thanks.

I am already aware of the multiplayer feature.

It's not potable.

Turn based drag and drop sounds more feasible.

Possible using touch instead with the multi touch features.