Invoke webtop from taskspace using SSO

Hi,

     We have a form in taskspace, that form contains link with url invoking of webtop. when we click on that link its calling webtop with login page, We want webtop should call with implemention of SSO. User who ever logged in to taskspace using that credentials  webtop should open. How to achieve this functionality. Can we achieve this functionality using wdk session management.

Thanks in advance,

Eswari Darapu