Is Gaza in Jerusalem?

Gaza is a city on the Palestinian coast. Jerusalem is a city in central historical Palestine. From your question, it appears you do no not know much about the Palestine-Israel conflict. I suggest you read the best answer to this question for a brief history:
http://answers.yahoo.com/question/index;_ylt=AjjzX3H.oD0HuZXX.NbnJDjty6IX;_ylv=3?qid=20090208102834AApxDtI

No Gaza is part of Israel, Jerusalem is the capital of Israel

No.

http://zioneocon.blogspot.com/map%20israel%20w%20out%20wb%20and%20gaza.gif

Gaza is a city and a strip of land on the coast. Jerusalem in inland.