chavez
look for XI black ops ranked server 1,2 and 3
not xtreme or something .
all filters are set on yes and all.
open steam , go to games , right click on cod black ops multiplayer , properties ,local files ,verify integrity of game cache ,click on it , this will update your game , after that open black ops mp and try to find the servers , if you find click right on them and add to favorites.
hope this will help
LOL, I tried that day after day , didnt help me till I created a DMZ on my IP. You may have to open some game ports if you dont want all the ports open like a DMZ does