I'd like to post pictures but my computer doesn't like the URL method. Under editing my signature, I found this:

You may upload a new custom image using the controls below.

Option 1 - Enter the URL to the Image on Another Website

Option 2 - Upload Image From Your Computer

Note: The maximum size of your custom image is 600 by 150 pixels or 195.3 KB (whichever is smaller).

Can I use this "option 2" when posting a pic in normal threads and posts? If so, can you tell me how?