Ah, I didn't really understand what you meant. So I should try "$userinfo[field5]"?
The page source for that block is this:
Code:
<div id="mymodification" class="tborder content_block">
<h4 class="thead block_title">
<a href="#top" rel="nofollow" class="collapse_gadget" onclick="return toggle_collapse('mymodification')"><img id="collapseimg_mymodification" src="http://www.360elites.net/images/greenfox/buttons/collapse_generic.gif" alt="" border="0" /></a>
<a name="mymodification"></a>
<span class="block_name">XBL</span>
</h4>
<div class="block_content" id="collapseobj_mymodification" style=""><div class="alt1 block_row">
<ul class="list_no_decoration">
<iframe src="http://gamercard.xbox.com/$profilefield[field5].card" scrolling="no" frameBorder="0" height="140" width="204">$profilefield[field5]</iframe>
</ul>
</div></div>
</div>