I was booted from a game because I hadn't taken my turn for 1 day. It was automatic booting, and on the settings, it said you could come back at least twice. But I couldn't find anything that could get me back in the game. Please help.....

If you go to the game in question, there should be a small button in the top left hand side saying "take over from AI"

http://wiki.warlight.net/index.php/Players_turning_into_AIs

If course, if your being booted ended the game, well, then the game is over.