first u open up another tab online and find the pic u want and
right click the image and press view image.
when the pic is by itself on another tab
u simply select all and copy the web address
then u come bak here to reply to reply to a thread and
click on the small picture just up above
the yellow one with a mountain
6th from the left...
once u click it
u just simply paste the address on the bar.
good luck