How do you save your progress in BFBC2?

I know the game auto saves but whenever i quit i lose all my progress. Any ideas?How do you save your progress in BFBC2?
Well, if your talking about Campaign, you just reach to a point when it saves automatically which is the only way. Now, if your talking about multiplayer just commit suicide (there is the option in the start menu), then go back to chose your kit and when you choose it, it will auto save.