[Lynne]

Try something like this in additional.css (you may need to tweek it for your site):

#sidebar_container.member_summary {
    clear: left;
    float: right;}
#userprof_content_container {
    float: none;
    margin-right: 260px;
    margin-left: 0;
}

Use CSS to change the looks of the blocks. I'd suggest using firebug to help out with this.

Postbit looks can also be changed via CSS.