right click somewhere on your photos and then click the "save pictue as" line. you can save your pictures on your hard drive like in "my documents" or on a disk.
When you are posting the pics, just go down to the "attach file" look to the right and click on the "browse" box. You can then go to where you have your pictures stored and click on the picture, you'll notice the "address" of your picture show up in the space just to the right of the "browse" tab. Click "submit reply" Your done