Joe, I'll try to help.
The full URL of your large photo is:
"http://www.wdwinfo.com/sites/disneymadtechie/wtclarge.jpg"
NOTE: The quotation marks are NOT part of the URL. They're here to keep as text in this post. Otherwise it would show as a link.
You should be able to get the URL by viewing the photo directly as stated by other posters, and then copying the URL address. OR, you can just write this down and type it in. In any case, you need the URL as shown above.
To get the photo to show in your post, simply start your post entering whatever text you want to say. When you want the photo to show, click on the IMG button that will show above your reply as being typed. When the pop-up menu shows, paste (or type in) the URL for your photo. Then click on OK.
Your photo will then look like this:
You can then continue to type more text, etc.
To put the photo into your signature, simply goto your preferences and add the appropriate URL in your signature block. This is a little different.
The URL for the small photo is "http://www.wdwinfo.com/sites/disneymadtechie/wtcsmall.jpg" You'll either need to copy this or write it down so you can type it in.
To put into your signature, go to User CP, then go to User Profile. Find the signature block section. There enter this expression:
(img src="http://www.wdwinfo.com/sites/disneymadtechie/wtcsmall.jpg")
NOTE: Do not enter any carriage returns. Type everything on one line. It only looks like it's on two lines above, but that is only the program wrapping the text. There should be only a single space between "img" and "src="
2nd, Do NOT use the left and right "(" ")" brackets as shown above. I used those here simply to make the browser show the code instead of showing the photo. REPLACE the "(" bracket with a "<" and replace the right bracket with a ">" when you enter the code. (Without the quotes). However, be sure you do keep the quotes around the URL as shown.
The photo should then show in your signatures