Selection of Just Attribute Nodes and Element Child Nodes

 Hi,
How do I select just the attribute nodes and element children from a 
context node using XPath?
for e.g.

<foo>
   <barChild  at="2" anAt="3">
      <barGC>
         ....
      </barGC>
   </barChild>
   <anotherBarChild>
         <abGC>
             ...
         </abGC>
    </anotherBarChild>
  </foo>

Here what would be the query to retrieve all the child nodes and 
attributes for barChild ?
/foo/barChild/??????
In this case, I need to get just "at", anAt" and "barGC" as results.
thanks,
Ram