To post the larger pictures you need to have an account on an image hosting site (its free) I use PhotoBucket. You upload your pictures on there and each picture is given an image URL (normally displayed clearly next to the picture). You copy the URL address and on the forum, in the reply box area there is a button called inset image (its the little yellow one that looks like a post card). click the button and a window will open up asking for the image URL. Paste it in the, select OK and the image will be added to your post.