thanks for quick response..
As i don't have any knowledge of Ldap and NET::Ldap documentation some what confusing to me..iwant to have some clarifications on the code you provided..

$ldap = Net::LDAP->new( 'ldap.umich.edu' );
 
# bind to a directory with dn and password
$mesg = $ldap->bind( 'cn=root, o=University of Michigan, c=us',
                      password => 'secret'
                    );

die "Invalid credential" if $mesg->is_error;
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can u provide some details on bind method arguments.. suppose my username is 'kamesh'
my password is 'secret'
my ldap server name is 'ldap.server.com
thanks
kamesh