Have the report youre writing open in another window and log into photobucket.
Go into your album on photobucket and move the cursor over the photo you want to put in your report.
A dropdown box should appear below the photo and you need to copy the code in the bottom box. Highlight the code, then right click and copy if it doesnt do it automatically when you click on the code.
Change windows now.
Go to where you want the photo in your report and right click then paste. You will see the code now but when you press submit this will make the photo appear as it is a link to your photobucket photo.
Hope that helps. Have a play to see if you can do it. You can always delete your post later if it doesnt work.