Hi,
I will try to put you something together, which should work in theory.
(I also can't test it with Warhammer, as I'm not having WAR)

Code:
//-----------------------------------------------------------
// DEFINE MAIL LABELS FOR SENDING KEY STROKES.
//-----------------------------------------------------------
<Label w1 Main-Ip-Address SendWinX War1>
<Label w2 Main-Ip-Address SendWinX War2>
<Label w3 172.16.1.35 SendWinX War3>
<Label w4 172.16.1.35 SendWinX War4>

//-----------------------------------------------------------
// SUBROUTINE TO LAUNCH AND RENAME A COPY OF WOW.
//-----------------------------------------------------------
<Command LaunchAndRename>
 	  <SendPC %1%>
 	 <Run "%2%">
 	 <RenameTargetWin %3%>
 	 <RemoveWinFrame>
  
//-----------------------------------------------------------
// HOTKEY TO LAUNCH AND RENAME YOUR WOW WINDOWS while 5 boxing
// Please configure the Path and processor afinitys correctly
//-----------------------------------------------------------
<Hotkey Alt Ctrl L>
<LaunchAndRename Main-Ip-Address "C:\Users\Justin\Desktop\The Desktop Folder\Misc\Warhammer Folder\WarhammerOnline_Beta_ddmf" War1>
<LaunchAndRename Main-Ip-Address "C:\Users\Justin\Desktop\The Desktop Folder\Misc\Warhammer Folder\WarhammerOnline_Beta_ddmf" War2>
<LaunchAndRename 172.16.1.35 "C:\Users\Justin\Desktop\The Desktop Folder\Warhammer Folder\WarhammerOnline_Beta_ddmf" War3>
<LaunchAndRename 172.16.1.35 "C:\Users\Justin\Desktop\The Desktop Folder\Warhammer Folder\WarhammerOnline_Beta_ddmf" War4>

//-----------------------------------------------------------
// DEFINE HOTKEYS FOR ALL KEY COMBINATIONS THAT WILL GET
// SENT TO ALL WOWS. ADD MORE KEY COMBO'S IF YOU WANT.
//-----------------------------------------------------------
<KeyList MyList A-Z, 0-9, Enter, Tab, Oem4, Space, Comma, Oem6 except W, A, S, D, Q, E, L, Y>

<Hotkey MyList; Shift MyList; Alt MyList; Ctrl MyList>
   <SendLabel w1, w2, w3, w4>
   <Key %Trigger%>


//Mouse-Broadcasting (change y to whatever key you want to use as amodifier to activate mousebroadcasting)
<UseKeyAsModifier y>
<Hotkey y LButton, MButton, RButton>  
<SendLabel w1, w2, w3, w4, w5>
<ClickMouse %TriggerMainKey%>
(You have to change the occurence of Main-Ip-Address to the IP address of your main (i think you mistyped it above, as it can't be the same ip-adress for the main and slave))

with this script you can start your Warhammers with a perss of 'ctrl alt l'.
If you also want to resize the War windows, simply tell me what resolution and position you want for each window, and i will add that too...