Try copying the URL from your browser (CTRL+C) an open a new post. In the toolbar above the post text box you will see a URL button. Click it and it will insert some HTML (web page code) that looks like [url][/url]. You need to paste the address of your photo page between the two url markers using CTRL+V, so it looks something like http://www.yourphotopageaddressgoeshere.com
If successful the text in the final post will appear blue and the url markers will go away.
Hope this helps,