I posted this on the codnation.net and asked for help, they directed me here:

http://codnation.net/general-discussion ... etc.htmlIs

Basically, I have high speed internet capable of 20 mbs speed, the highest in my area. I went out and purchased wireless n adapter and wireless n dual band d-link router. In the games on MW2 on the 360, I am usually the host of games but since I changed my settings to wireless N, it wants me to be host all of the time but the problem is... in big team games... the game usually ends up saying searching for best host and boots me out. This does not happen in other game types. For your other information for possible help... I have my router settings for the 360 on wireless N, i have the option of choosing a and/or n. I usually game with the desk top powered completely off due to its problematic ways. We do have a lap top in the home, but it's usually off as well. I'd rather play a game not as host, and finish, then have a fast connection... be the host... and get booted 3 kills short of a nuke on my killstreak.

Any help greatly appreciated. Thanks and god bless.