Cool. Now you just have to upload the images to an image-hosting website of your choice. There are free ones...and even the non-free ones are quite inexpensive.
People have used Photo Bucket with success. http://photobucket.com/
I use Smugmug (http://www.smugmug.com
) - only $40/year, lots of excellent features and very fast stateside tech support. A family-run operation.
I've never used the Gallery here at Skoolie.net but lots of people do use it.
Once your images are hosted on the web somewhere, you can then link to them to post your pics on a forum. First though get them on a web-hosting site somewhere, then worry about linking to them.