..once you have the spinning globe open, go to file - save as. Name it something randomly, put it somewhere, like on your desktop.
Now click "select file by type (extension)"
Find "GIF image (gif)"
Select it, press save
Next window, select "save as animation"
Keep the "convert to Indexed.."
Press "export"
Next window, keep everything as it is, you may disable the "GIF comment" if you wish.
Press "save"
Now it's in your desktop. Go to
www.imageshack.us
Click browse, go to your desktop, find the file, press open, press start upload
Copy "Direct link to image"
Go to the forums and put the URL you get between tags.