You will need to sign up to a remote image hosting website, like
photobucket. Once you have an account at one of these websites, you can upload your images there.
What you need to do next is:
- Copy the URL
- Come back to the AIUK to post in the thread of your choice
- Click on the "Insert Image" icon (looks like a pic of a mountain) in the tool menu above the reply window
- Paste in the URL for that image and click OK
- Finish your post, click submit and job's a good'n'
If you're more web savvy, you can use image tags.
*Another way is to right click on a photo and "copy image location". Then select the "insert image" icon and paste it there.