I need help....I'm playing Call of Duty 4 on verteran and I'm stuck in the TV room on the "Charlie Don't Surf" Mission. Somebody help!!! Its endless guys and no mater what I do....I either die by granades or die by the guys over whelming me.

I also need help with multiplayer, I'm not the best player out there.....guys run circles around me, but I enjoy playing the game. Will someone teach me to play better on the multiplayer? I'm looking for friends to just hang out and play for a bit on the game. Not guys giving me a hard time cause I'm not doing awesome and getting 30 kills. To me just having fun is better than telling someone they suck.