Nick, guess you didn't get my email offering assistance the other evening.
Avatars are easy because you don't have to upload your photo to Photobucket, you can just browse your pc and upload from the file.
Go to the Icon (picture of a Cog) at the top of the forum board. That is your Settings.
Scroll down to User Settings and click the + sign.
Scroll down on that page to avatar,
Browse your files for a picture you want as your avatar. Don't use a great big file, you may have to resize your picture to 800 x 800 or somewhere in that range.
Click Upload File Now.
When your picture appears scroll down to Update, click, wait until it is finished and you are .
Done!
To post pictures within messages see Forum Help, Posting Picture for Dummies (although I hate that name).
Call me if you need more help, I just posted my phone number on the Private Forum Section.