If you are wanting to place an image in a post like this:
Yes that is me back in 1991 near the equator in the Western Pacific..
Also you can also do it in your profile the same way..
First you need to have the image hosted somewhere. You can use a web server if you have one (geocities works) or sign up for a place like Photobucket.com
. It would be prefered to use Photobucket since they can provide you with the actual BBCode to place in your post/profile.
To do it with Geocities, you just click the BBCode button: Img (shown above) and then the exact link to the image and close the BBCode tag. It will look something like this: