Hi all. Here's an overlay that works great for IL2COD. I run Win7 x64 and it works flawlessly for me. It's nice thing to have with only one monitor. That way you can always know who's talking and who's in your channel while in game.

Download from here: http://tsnotifier.cfxxl.de/SetupTSNotifierV1.4.7.msi

Choose the top one (installer) and let it install. Next start the program and enable it (tsnotifyer). Now go into the game once and exit (it will not work initially). Now go into the gamesettings.ini (in tsnotifier there's an option for "edit gamesettings.ini) - Once inside it will look something similar to this:

[WoW.exe]
game.enabled=1
[Gw.exe]
game.enabled=1
[lotroclient.exe]
game.enabled=1
[TSNotifier.exe]
game.enabled=0
[TSNotifier_x64.exe]
game.enabled=0
[firefox.exe]
game.enabled=0
[Steam.exe]
game.enabled=0
[Explorer.EXE]
game.enabled=0
[DllHost.exe]
game.enabled=0
[dxwsetup.exe]
game.enabled=0
[hyperlobby.exe]
game.enabled=0
[plugin-container.exe]
game.enabled=0
[rogame.exe]
game.enabled=0
[Dwm.exe]
game.enabled=0
[conhost.exe]
game.enabled=0
[Launcher.exe]
game.enabled=1

[GameOverlayUI.exe]
game.enabled=0
[NOTEPAD.EXE]
game.enabled=0
[nvcplui.exe]
game.enabled=0
[taskhost.exe]
game.enabled=0
[TrackIR5.exe]
game.enabled=0
[taskmgr.exe]
game.enabled=0
[ts3client_win64.exe]
game.enabled=0
[InstallHook.exe]
game.enabled=0
[mspaint.exe]
game.enabled=0
Once you find Launcher.exe (this is why you have to start the game once to make this work) change it from "0" to "1" to enable it for IL2COD. Now restart TS3 / TSnotifier again and hop into IL2COD. You should have an overlay!
Here's what it looks like on my screen with both of our mic's keyed up. When noone is talking it's virtually invisible. Very cool! Enjoy!