I had this from some time back and i think there is some ppl that still need help in posting pic's. so here it is again. maybe TD will make a sticky out of it.
Ok first thing you need to do is get the pic's that you would like to share with us uploaded in to your galley You can find this in your User CP.
upload the pics in to your gallery then when you get ready to share something with us just go to your gallery and find the pic you would like to post.

Ok once you right click on Properties copy the location address from there.
Ok now go back to the page you would like to place the pic..
Ok this is going to open a box like the one in the pic. take out the HTTP and paste the address you copied from the pic address in this box and click ok this is what it should look like.
You can add a pic any where in the message box at any time. hope this helps out some of the new guy and gals that is having trouble with posting pic's.