in the reply box,click on advanced,after the new page opensup with the blank space for reply,notice the
first heading is title
second is message
below the message u can c written " fonts,sizes etc...in the same line u can c a black paper click with a down arrow,click on that icon,another small page wil open which wil give u options to select ur files one by one ,max 5 at a time,click upload,once the pix r uploaded the bars clear automatically so u can upload more pix,then ur done with uploadin pix simply click submit reply
hope it helps 
