try this <a href=”yourdomain.com/<?php global $userdata;
get_currentuserinfo(); echo( $userdata->user_login );?>”>Client Page
Hey man, I feel your pain. I did happen upon this article. Haven’t read it entirely but sounds like what we’re after:
http://ww.wp.xz.cn/support/topic/my-crack-at-a-client-login-sectioncustomer-portal