You don't need to use resize2mail.com. Photobucket has an Edit page which will let you do what you want. To make it easy, delete the picture you have already uploaded to Photobucket and then follow Colleen's instructions on resizing it to 320x240. If you did not change the name of the picture, the code I gave you will work.
Hello andjayik. Sorry to hear it is being a pain. In time with practice, you will acquire the correct procedure. I found the avatar easy enough. The sig procedure was awkward for me. Kiki was kind enough to set up my new sig. If it is too much struggle i can anticipate, the administrator or the moderators will help you with it.