You're getting close that "img58.photobucket.com/album/albums/v178/baja272/4.jpeg" is almost a URL, you just need an "http://" in front of it and then put it in between tags not a URL link. You can do it one of 2 ways...1) copy the "URL" field from photobucket, press the IMG button in RC's reply post screen and paste the photobucket URL into the prompt....OR....2) copy the "IMG" field from photo bucket and paste it right into the message portion of the RC reply screen. Both will do the SAME THING! The second method just allows you to better control where it gets pasted..the IMG button always adds to the bottom.
But there is also ONE more problem..you password protected your gallery so it won't work on here. Remove the password protection and this:
[img]http://img58.photobucket.com/album/albums/v178/baja272/4.jpeg
..should start to work. Removing the password protection doesn't allow others to modify your account..it's just a password protection for VIEWING your photos. Modifying your account would require a login whether that password protection is on or not. The password protection would be if you have family/personal photos up there that you don't want everybody to see, and you just want to tell a few folks the password. It's not for image sharing in forums.
Hope this helped...you're close!!!
--Fizz