Boosting is a simple way of getting your score/kill ratio up very quickly in a very short period of time. It’s kind of cheating, but it also kind of…works. So, I’ll show you how to do it. It’s easier to just show you than to type it all out, so I found a video that does a great job of showing you how to boost in MW2, here you go:
If you really want every possible advantage you can get, I’d also recommend you check out the MW2 Prestige Edition Strategy Guide
If you’re not already a member at MW2Forum.com, I’d recommend you check that out, too. It’s currently the largest, most active forum online devoted solely to MW2.