How can I make a link from content profile node to it's user account page?
Quick and easy/dirty on the view page at least, in your node template for your content profile type, let's assume it is node-profile.tpl.php, you could add something like

&lt;?php if (user_access('administer users') &amp;&amp; $page): ?&gt;
  &lt;?php print l('User Account For This Profile', 'user/' . $node-&gt;uid);
&lt;?php endif; ?&gt;


wherever you wanted that link.  If you want it on the teasers of the node as well, eg, if the profiles are listed in a view or on the front page, etc, just take out the &amp;&amp; $page otherwise this will only show up in the full node pages.  You can also pick any permission you want, I just grabbed the first one that made sense to me :)

ADDITION:  if you actually have a role called 'Admin' you can check for it like this:

 &lt;?php 
   global $user;
   if (in_array('Admin',array_values($user-&gt;roles)) &amp;&amp; $page) {
      print l('User Account For This Profile', 'user/' . $node-&gt;uid);
   }
 ?&gt;