from scratch I would try the following script:
Code:
//-----------------------------------------------------------
// SUBROUTINE TO LAUNCH AND RENAME A COPY OF WOW.
//-----------------------------------------------------------
<Command LaunchAndRename>
    <SendPC %1%>
         <Run %2%>
         <RenameTargetWin %3%>
         <RemoveWinFrame>
         <SetWinRect %4% %5% %6% %7%>
         <wait 1000>
         <text %8%>
         <Key tab>
         <text %9%>
         <wait 100>
         <Key Enter>

//-----------------------------------------------------------
// DEFINE A MAIL LABEL FOR EACH WOW
//-----------------------------------------------------------
<Label w1 192.168.0.20 SendWinM WoW1>
<Label w2 192.168.0.25 SendWinM WoW2>
<Label w3 192.168.0.25 SendWinM WoW3>
<Label w4 192.168.0.25 SendWinM WoW4>
<Label w5 192.168.0.25 SendWinM WoW5>

//-----------------------------------------------------------
// HOTKEY TO LAUNCH AND RENAME THE WOW WINDOWS.
//-----------------------------------------------------------
<Hotkey ScrollLockOn Alt Ctrl L>
           <LaunchAndRename 192.168.0.20 "c:\wow-single\wow.exe" WoW1 0 0 1920 1200 "YourUsername" "YourPassword">
           <LaunchAndRename 192.168.0.25 "c:\wow2\wow.exe" WoW2 0 0 1050 840 "YourUsername" "YourPassword">
           <LaunchAndRename 192.168.0.25 "c:\wow3\wow.exe" WoW3 0 840 1050 840 "YourUsername" "YourPassword">
           <LaunchAndRename 192.168.0.25 "c:\wow4\wow.exe" WoW4 1050 0 1050 840 "YourUsername" "YourPassword">
           <LaunchAndRename 192.168.0.25 "c:\wow5\wow.exe" WoW5 1050 840 1050 840 "YourUsername" "YourPassword">

//-----------------------------------------------------------
// DEFINE HOTKEYS FOR ALL KEY COMBINATIONS THAT WILL GET
// SENT TO ALL FOUR WOWS. ADD MORE KEY COMBO'S IF YOU WANT.
//-----------------------------------------------------------
<Hotkey ScrollLockOn A-Z, 0-9, F1-F12>
          <SendLabel w1, w2, w3, w4, w5>
                   <Key %Trigger%>

//-----------------------------------------------------------
// DEFINE MOVEMENT KEYS THAT WILL GET SENT TO ALL FOUR WOW'S.
// ADD MORE KEYS IF YOU WANT.
//-----------------------------------------------------------
<MovementHotkey ScrollLockOn up, down, left, right>
         <SendLabel w1, w2, w3, w4. w5>
                 <Key %Trigger%>

//-----------------------------------------------------------
// BROADCAST MOUSE CLICKS. HOLD DOWN OEM3 (ON U.S. KEYBOARDS,
// THAT'S THE SQUIGGLE KEY IN UPPPER LEFT CORNER) WHEN YOU
// WANT TO BROADCAST.
//-----------------------------------------------------------
<UseKeyAsModifier Oem3>
<Hotkey ScrollLockOn Oem3 LButton, MButton, RButton, Button4, Button5>
        <SendLabel w1, w2, w3, w4, w5>
                 <ClickMouse %TriggerMainKey%>
Load it on both PCs, and the by pressing ctrl + alt + l on one of them the 5 wows should start....
(i'm not exactly sure if the 'login'-part realy works, but starting,resizing and broadcasting should...)