I use keyclone to control all five of my clients..

and Maximizer(with keyclone) to setup the regions..
I setup keyclone to point to these directories and launch the proper wow.exe's.

I have wow copied to a
/world of warcraft/wow.exe
/world of warcraft clones/wow.exe (where i launch wow from for all 4 clones)

I play all 5 on one PC and have 1 client across the top
<----------------CLIENT 1--------------------->
<-client2-><-client3-><-client4-><-client5->

Its pretty small but i can still click on each window and control things if i need too. (i have a 19inch monitor lol)



Thats what I do... Not sure what program your using... since you use a .batch file. (PS I old an old version of keyclone.. I stick with what works perfect lol.. its like F or K.. i dunno)