To post pictures, you will see an 'Additional Options...' tag at the bottom of the post text box. Click this, and an 'Attach:' box will appear. The pics need to be less than 1024 KB, and it seems need to be less than 1000 pixels wide. Any photo editor should do that if they are too big like mine were. I use Paint.Net personally, but most use the software that came with the camera.
- Rayk