Thanks for the prompt reply!!
But things here may be simple for you, not for me. Not Complaining. I very much appreciate your help.

The three regions in the code are actually three radio buttons. If either one is clicked it takes me to a new page. So how do i choose and click the radio button. The process for clicking a button is agent->click(); but what about the radio button. I read the www::mechanize page, but it is still not very clear to me.

The code for the radio buttons is

<table id="rdlZone" class="RBtnList" cellspacing="1" cellpadding="1" b
+order="0">
<tr>
    <input id="rdlZone_0" type="radio" name="rdlZone" value="1" onclic
+k="__doPostBack('rdlZone_0','')" language="javascript" /><label for="
+rdlZone_0">Chennai Madras</label>
</tr>
<tr>
    <td><input id="rdlZone_1" type="radio" name="rdlZone" value="2" on
+click="__doPostBack('rdlZone_1','')" language="javascript" /><label f
+or="rdlZone_1"></td>US Embassy New Delhi</label></td>
</tr>
<tr>
    <td><input id="rdlZone_2" type="radio" name="rdlZone" value="3" on
+click="__doPostBack('rdlZone_2','')" language="javascript" /><label f
+or="rdlZone_2"></td>Calcutta (Kolkata)</label></td>
</tr>
</table>
[download]