How to move the comment author name and reply link below the comment

Hi

I'd like to move the comment author name and reply link to below the comment as opposed to besides gravatr. I'd also like the gravatar to be aligned left like that of an image in the body so that the comment is kind of seamlessly blended with the picture. I have tried to add margin and padding for those values but that doesn't work. You can see my target page here. (This is a gynecomastia site)

Jimmy