yes, 세상 means world. By the way, why don't you write in 한글? That's much easier to read than 로마자

For the other meanings of 세상, SEE http://kr.dictionary.search.yahoo.com/search/dictionaryp?subtype=eng&prop=&p=%EC%84%B8%EC%83%81

Try this site http://people.cs.uchicago.edu/~wchae/kor/nabi.html You type with your keyboard, and you get the 한글 in the upper box ;)

thank you.. Sorry, I don't know how to write that way..