Hope this helps!!
You will need to use a picture that is saved to your hard drive.
You can host the file at imageshack.us
. You do not have to register to use their image hosting, but if you do register it will keep track of the pics you've uploaded so you can go back to them later.
Once you're at imageshack's homepage, click on the BROWSE
button and navigate to the picture you want to upload.
Double click the filename of the picture you want to upload and then click HOST IT
. It may take a minute depending on your internet speed. Once it is uploaded you will see this screen:
Then, all you have to do is copy the code in the box where it says Hotlink for Forums
. Paste that code in your post and you're done. This thread is originally from the Fiddling with Photos section, but I thought it was a good idea to post it here too.