I'm not sure if you've figured this out yet, Seagal_lover, but I've moved this thread from the "We Love You Steven Seagal" section to the Site Discussion section. In case you haven't found how to post attachments yet, hopefully you'll find this helpful.
First, scroll down past the "Reply to Thread" box down to "Additional Options".
Next, under "Attach Files", click Manage Attachments. A separate box will pop up. From there you can upload an image either from your computer (which you can find on your computer by clicking Browse) or from somewhere on the internet (you would copy and paste the url address of the picture into the box there).
When you're finished with your selections, click "Upload" under either section and, once you've completed your reply, click "Submit Reply".
Good luck! And just ask if there's something I haven't explained clearly enough.