webservice using xml and linq

Hi
this is an xml file

<?xml version="1.0" encoding="utf-8" ?>
<persons>
<person>
<ID>100</ID>
<Name>arun</Name>
<City>LA</City>
<Job>Se</Job>
</person>
<person>
<ID>101</ID>
<Name>Biju</Name>
<City>CA</City>
<Job>Doctor</Job>
</person>
<person>
<ID>102</ID>
<Name>Vikram</Name>
<City>GA</City>
<Job>Driver</Job>
</person>


</persons>
i want to do a webservice using xmlfile
my requirement is if i pass the id the corresponding name,city and job will be displayed

how it is possible

K L BAIJU