Not sure if I understand your question, but currently for normal posts, the board does not support attaching pictures from your own PC. You can link to your pictures from websites no problem. There is a photo gallery that you can also put your pictures and I believe you can link to those pictures (I think).
If anyone knows how to link to just the picture in the photo gallery, please post the instructions. I was able to upload a picture to the photo gallery, but don't know what link to use to get just the picture (as an img insertion) in a regular forum post.