Welcome to SMC George!
To attach photos within your post, you have a couple of options: one is to upload the file(s) via the attach text box toward the bottom of the Post Reply Screen. You'll need to utilize the Reply Link to access this and not the Quick Reply Box at the bottom of each thread page. Once at the Post Reply, you'll click the "Browse Button" next to the Attach text box to allow you to navigate to the saved location of the image file(s) you wish to post. The file size cannot exceed 100KB for each image.
The second option is a little more complex as it requires the image file(s) to be located on another server such as PhotoBucket, Kodak or some other familiar resource. To accomplish this, click the Insert Image Icon, second row, second from the left and then enter the URL or address of the image file as below:
[img]http://somesite/image.gif[/img]