At the bottom of every post, there is a quote button
http://www.rapbattles.com/forum/audio/buttons/quote.gif
Click the quote button and it takes you to the advance reply page with the quote already inserted
Type your message below the quote
http://img405.imageshack.us/img405/6554/quoting.gif
Do not forget to submit reply or preview the post
http://img21.imageshack.us/img21/701...eviewreply.gif