New update from teknoGods. Looks like they are close to having a monumental loader for COD6. Here's the FAQ.
http://teknogods.com/?p=329

Update on MW2 #6

Hi there

Here’s some quick Q&A:

• Q: Do I have to run the game again to connect to another IP?
  A: Yes and No. The game runs with pre-set server IP from the loader (F9 triggers connection), but you can use a console command to connect elsewhere, for example:
  >> tk_connect_mp 192.168.0.15 28960
• Q: So, we are getting a console?
  A: Yes, even three. One, called WinConsole is a separate window, second, called DevConsole is a custom overlay console visible in-game. Third one is the original console, but it can be opened only with the .159 build of the game. You can  type in commands using all three of them!
• Q: Why on the videos we don’t see any console being used?
  A: Simple, I was using FRAPS for the video capturing and it doesn’t capture separate windows such as WinConsole.
• Q: Server-browser?
  A: Yes, final loader will have a server browser with 2 tabs: online games (internet connection required) and local games (no interned connection required).
• Q: What about our stats?
  A: Loader will ask you for your ‘ID name’ which will be locally assigned to your stats/power-ups etc. Nickname can be set using a different edit box (currently changeable using the console).
• Q: Will it be possible to host a game for more than 18 players?
  A: I need to test how stable this patch is. If the tests go fine I will put it into the final version.
• Q: Dedicated server mode. How is it?
  A: Loader will run the game with super-minimum gfx requirements. WinConsole will be open. Later, loader will automatically execute server.cfg file. Map rotation should work. Remote administration – maybe, depends on the demand.
• Q: Why is it Steam-less? It will allow pirates to run the game!
  A: Well, two reasons. First one, steam emulation is a key feature which makes it all work. It’s not just optional. Second, with your original Steam, our loader could be detected as a cheat and your account could get banned. We might code a DRM module that would make sure user has a legit copy installed, but DRMs as we all know, can be easily bypassed, resulting all this hard work being a waste of time.

Check out their site to see the video showing a lobby of 127! yes, one hundred and 27 players possible.

Wootsauce.