Ok I wanted to have a screenshot for each step but my internet is running slow tonight so i've condensed it into 3 main steps with a little added text for description.
Step one :
Once you have set up your photobucket account click on my albums. This will be empty the first time you go there. Click on the chose files button marked in this photo with a red arrow
If you have a bunch you can load the bulk uploader.
Step 2: follow the onscreen instructions and once finished return to album.
When you have returned to your album and see the pic, hover over the picture with your mouse and a box will appear below with different code options.
click on the bottom one that says IMG code As indicated by the red circle and arrow in photo. it should highlight blue and say "coppied"
Step 3: In a seperate browser window that has taxinet loaded click the reply button just as you would to reply to any post.
Once here right click on your mouse and click paste in the text box
There should be a link that starts and stops with IMG in brackets Under this you can post any text you want.
Hope this helps !