Hi Graham
1) You will need to set up an account with www.photobucket.com
2) Create a username and password and I think you have to enter an active Email address to receive instructions from there.
When you want to insert a pic into a thread, go to photobucket and navigate to this page;
click on browse and select the pic from your; My Documents/ My Pictures. When it has loaded, click on submit. Wait for a while, your pic will then be stored in My Album with photobucket.
Scroll down to Photos (just below account options)
Highlight the Img (the section shaded blue) Right click--- select copy---come back to your composition box---right click and select paste.
Hopefully I've explained it OK. Try it before you start callin' me a ####