Still befuzzled..

Funny this, I can look at old posts of mine and see everything in preview just as it should be, but I've been through the process I always use and it just isn't letting me see the new images. My published posts have little squares beside them which you can hit to see the image. I thought at first I had exported them too large but I've tried different sizes and frankly can't be bothered to devote more time to trying to get it working. If anyone knows if I have a setting wrong somewhere, just post a comment to this post. Ta muchly, Pete.