HotkeyNet will assign a name to an instance of WoW even if it is running in fullscreen windowed mode. In the code segment below HotkeyNet cycles through the instances of WoW and renames each one.

<Hotkey Ctrl N>
<Rename "World of Warcraft" WoW1>
<Rename "World of Warcraft" WoW2>
<Rename "World of Warcraft" WoW3>
<Rename "World of Warcraft" WoW4>
<Rename "World of Warcraft" WoW5>

<Hotkey F1>
<Toggle WoW1 WoW2 WoW3 WoW4 WoW5>