In case you're new to IMG-ing, just right click the image and select properties and you will get the image URL. Copy and paste that URL into the IMG pop-up that you get when you press the IMG button on your posting page.
GIF's
Special thanks to tinypic.com who lets us host gaian friendly pictures on their free web hosting.
A MS (Microsoft Windows) way to make GIFs
Image editing and sizing can be down in Photoshop, free with Windows 98, and XP. Export images (uniform in size for least frustration) as GIFs under the file menu. Another GIF editor is needed, MS GIF Animator95 (old but it works perfectly), avalible online for free. Set how long you want each image to display for (in 1/100ths of a second), and hit loop forever.