Hi Wil-

Are these in an online photo album?

If you have something like Photobucket- there's some windows on the right side of the image, you can click on the address there and it'll copy the link with address and image tags for you- and you just paste it in the forum.

If you have something different, Right click on the image, go to "copy image location" with Mac, or "properties" and copy the address in the url field. Then you click on the "insert image" icon (it looks like a yellow square with a mountain and sun in it) paste that address you copied into the window and click go.

If you have the picture on your desktop, or pictures folder- or anywhere locally on your computer, there's a way to load it as an attachment- but I haven't done that in a few years.