Java XML Tree Reading continued

Hello,
I have a program which loads an XML document as its config file. I use xpath to retrieve items from it, however, I need to be able to get the names of sub node values (not sure if I am explaining this right). Here is a chunk of the xml config:

<mtas>
      <mta1>
        <bind_ip>192.168.1.115</bind_ip>
        <mta_name>mx1.goforit.com</mta_name>
        <mta_port>25</mta_port>
        <mta_distributor_connections>5</mta_distributor_connections>
        <mta_distribute_to>192.168.1.115</mta_distribute_to>
        </mta1>

      <mta2>
<bind_ip>192.168.1.115</bind_ip>
<mta_name>mx2.goforit.com</mta_name>
<mta_port>25</mta_port>
<mta_distributor_connections>5</mta_distributor_connections>
<mta_distribute_to>192.168.1.115</mta_distribute_to>
</mta2>
-
      <mta3>
<bind_ip>192.168.1.115</bind_ip>
<mta_name>mx3.goforit.com</mta_name>
<mta_port>25</mta_port>
<mta_distributor_connections>5</mta_distributor_connections>
<mta_distribute_to>192.168.1.115</mta_distribute_to>
</mta3>
-
      <mta4>
<bind_ip>192.168.1.115</bind_ip>
<mta_name>mx4.goforit.com</mta_name>
<mta_port>25</mta_port>
<mta_distributor_connections>5</mta_distributor_connections>
<mta_distribute_to>192.168.1.115</mta_distribute_to>
</mta4>
-
      <mta5>
<bind_ip>192.168.1.115</bind_ip>
<mta_name>mx5.goforit.com</mta_name>
<mta_port>25</mta_port>
<mta_distributor_connections>5</mta_distributor_connections>
<mta_distribute_to>192.168.1.115</mta_distribute_to>
</mta5>
</mtas>

as you can see under the <mtas> tag I have 5 other structures defined. I need to be able to retrieve a list of these structures by name and have them returned to me as a comma delimited string... ie I would call a function called getValueList("root/mtas") and it would return to me mta1,mta2,mta3,mta4,mta5.

Worth 500 points.

Thanks,
Rick