Ultimate Facebook Connect

I use Ultimate Facebook plugin.
Basicaly all I use now is connect functionality. And it works perfect. But I want to have my own button (bg image and size) instead of generated by plugin. And I do not really need avatar with Sign out link after successful login.
I think it is possible to overwrite css to make it look like I want.
But is there easier way? I mean is that possible to fetch button link href? Maybe some PHP?