Welcome to the site HAWS
To post a picture under your name you'll need to go to your profile page. The buttons are located near the top left of the site. Click on the one that says "Profile" Once your there look on the left side of the page for "Forum Profile" and click on that. You'll see a marker that says "I have my own picture" or "I will upload my own picture" so you can chose what you want. If you have a "Photobucket" account or other type of hosting site then upload the picture you want to that site. Copy the link and paste it into the box next to "I have my own picture" If you go the other route just click the browse button and pick the picture you want to upload.
I hope this helps.
Below is a picture of what you should see and where to place a link to your photo.