I found a Ping Monitoring trick for MW2.
If guys here can test this and post a screenshot of their ping bars, it would be greatly appreciated.Navigate to the folder: 'program files\steam\steamapps\common\call of duty modern warfare 2\players' and open the file config_mp.cfg
Change scoresping_interval from 100 to 20, and maxbars from 4 to 10 (10 is the max).
This means that each of the 10 bars represents 20ms, with full green being 20ms or lower, and 1 red being 200ms or higher.