[Lynne]

Are you adverse to editing your templates? The reason I ask is that your avatar image tag has no class associated with it (nor do any elements immediately above it) and so that makes it more difficult to write some CSS for it.

You can try this though and see if it effects anything else it isn't supposed to:

.alt2 a:link img {border-radius: 50%;
-moz-border-radius: 50%;
-webkit-border-radius: 50%;
-o-border-radius: 50%};