BFA Subscribe widget--changing icons, deleting Comments icon

Where do I go to change the BFA Subscribe widget look and layout? I'd like to--

• get rid of the Comments subscribe icon (the blue talk blob)
• get rid of the Email subscribe icon (tilted envelope)
• make the RSS icon smaller (I chose the smaller icon on my Feedburner account but it looks big)
• have a button that looks like a button for the Email subscription (not the gray bar)

Any clues on this? Do I have to go into bfa_subscribe.php? If so, where in there and how can I do these things?

Thank you very much for your help. I'm at http://dougcoe.com/blog/
Doug