XML parsing question

[Anirban Adhikary]

Hi List ,
I have a xml file which looks like

<BSC id="AMIBRB1">
      <ALPHA>10</ALPHA>
      <AMRCSFR3MODE>1,3,4,7</AMRCSFR3MODE>
      <AMRCSFR3THR>12,16,21</AMRCSFR3THR>
      <AMRCSFR3HYST>2,3,3</AMRCSFR3HYST>
      <AMRCSFR4MODE>1,3,6,8</AMRCSFR4MODE>
      <AMRCSFR4THR>12,17,25</AMRCSFR4THR>
      <PAGBUNDLE>50</PAGBUNDLE>
      <USERDATA>AMI_BRANLY_B_1</USERDATA>
    </BSC>
    <BSC id="BAYHAB1">
      <ALPHA>10</ALPHA>
      <AMRCSFR3MODE>1,3,4,7</AMRCSFR3MODE>
      <AMRCSFR3THR>12,16,21</AMRCSFR3THR>
      <AMRCSFR3HYST>2,3,3</AMRCSFR3HYST>
      <AMRCSFR4MODE>1,3,6,8</AMRCSFR4MODE>
      <REEST>ON</REEST>
      <REPFACCH>ON</REPFACCH>
      <BCCHNORMAL>0</BCCHNORMAL>
    </BSC>

I need to create a new xml file from this xml.
Now I need to store the first BSC id and need to check it against the other
BSC ids. If both ids are same then I need to write the the contents of
between the BSC id tag in a new xml file.