the easiest way to do it is have your message box that you type into ready on cattletoday. on a separate page pull up your photobucket with photo already on there. my version of photobucket has three boxes under each picture. the bottom box has blahblahblahblah[IMG], just click on that box, right click, copy, go over to your message box on cattle today, right click, paste and then send the message.
the other way is on your cattle today message box page you have yellow boxes above where you type, one of which says "Img". click that. then go over to photobucket, click on the first box (Url) when it is higlighted right click on it, copy, go back to cattleday, click on your message box after the [Img] that you previously added to your message. right click, paste. then click on the yellow Img button again and it will "close" it for you. send.