You'd need to publish your IP with the location below and create a share open to the world.
/Volumes/Portable_HD/Pictures/Car/Cars/Trans Am/ap car/1980/1.jpg
Check another thread with pix and reply with the "quote" option ... you'll see the IMG format it's looking for. You need tinypic, photobucket, 78ta gallery or another web hosting/image sharing site to link in pix.