Moving each char on 1 keyboard?

I'm an aspiring multi-boxer, hopefully will start my team up soon. Money issues, ATM.

In some instances, bosses require you to move individual characters. With 5 wow copies being run on a single desktop, is it possible to control each character without changing the active window?

I was thinking that a strategy where holding a button and using the movement keys would move a different character than the one that is currently being used as the main.
Is this possible in any way? Perhaps disable sending keys to four copies when a key is pressed, while allow a different copy to receive them?

Is this making any sense at all?

Sure, you could just go into your keybindings and set each one to a different key, though you might be better off setting them all to a set of movement keys like the arrows on the keypad or something like that. This way, if you had an AoE effect like the ones Nazan uses at the end of Ramparts, you can just tap the left key and move them all left each time to the wall, then tap forward to move 'em all up a bit, then go back to the right. That'd give you the most movement potential without having to worry about one of them tripping on an already dropped AoE spot. For precision movements for each one, you'll either have to bind a lot of keys or switch windows to the one you want moved.

If you use Keyclone, you can set this up with hotstrings/keymaps. I have a 3box on EQ2 where a ctrl & arrow keys will move the left slave while alt & arrows will move the right slave. Un-modified, the arrows will move both slaves together (though typically in different directions, but great for moving into or away from a mob).

Normal movement is still of course done via WASD & /follow. Hope this helps :)