First thing, open a Photobucket account and download the pictures you want to share to that site. Select the downloaded photobucket photo and then select the URL link code IMG. A response comes back copied. Go to the VRCC site and select the picture icon. The latter will download a couple IMGs in brackets. You need to paste the copied URL code from photobucket in the middle of the VRCC IMG brackets. If you end up with two sets of IMG brackets, one set needs to be eliminated. Click preview and see if it worked. If not, keep trying and asking questions. Also, use the search engine to find answers too. FWIW
If you use the IMG code as Salty said you dont need to use the image button and the brackets......they will automatically be applied when you post that link in the body of your message