You can go to Photobucket and sign up for free. Once you are signed up all you have to do is upload your pics to their website and copy and paste the URL to your message here. :duh:
the image has to be hosted on the web somewhere. you cannot upload from your hard drive to the forum. you have to use an image hosting website. imageshack.com and photobucket.com are good ones, and they're free for a basic account.
Go to: www.aquaticphotos.com
The site was set up by a member to post in Aquaria Central. Obviously, the pix you post should be related to aquarium subjects.