I'm trying to see if there is a way to provide a direct link to a
portlet (detail portlet) which can pass the user information to be
presented in the detail portlet?

I'm looking at -

http://server/IDM/portal/cn/DefaultC...Page/MyProfile

and then being able to append something like ?user=testuser at the end
to make it display a specific user.

Is this possible at all as I cant seem to work out a URL string that
will do this.