Welcome to the website, Phillip. We're glad to have another 'ziggy' join us -- your work is beautiful and you'll find several very accomplished scrollers here like cskipper, ncscroller, sawduster and our newest scroller, Vanilla Gorilla.
As you can see DaveO put one of your pictures in his post, it is really easy. Here's a quick tutorial: Open a second window with your photo gallery and pick the picture you want to expand it from thumbnail size. Scroll down below the picture to see several options for cutting code -- the first one is for the size picture Dave inserted. Copy it into the Windows fuffer with CTRL-C. Move to the other window and paste the buffer into the thread you are creating -- it will be changed to a picture when you preview the post or submit it. Other options include embedding a thumbnail that gets translatted to a full picture when the use clicks on it. Have fun and show us more!