Aquí les mando el codigo que estoy usando, al momento de escojer un numero de la lista desplegable al darle buscar, me sale una pàgina que dice "Non supported method", espero me puedan ayudar, muchas gracias.
<form action=http://informatelylocatel.nl.gob.mx/cgi/directorios/DNOT/csve.cgi method=post>
<p align="left"><span class="td_tabla_normal"><strong>Numero de la Notaría: </strong></span><font face="Arial, Helvetica, sans-serif" size="2">
<select name="notaria" id="notaria">
<option value="001"selected>001
<option value="002">002
<option value="003">003
<option value="004">004
<option value="005">005
<option value="006">006
<option value="007">007
<option value="008">008
<option value="009">009
<option value="010">010
<option value="011">011
<option value="012">012
<option value="013">013
<option value="014">014
<option value="015">015
<option value="016">016
<option value="017">017
<option value="018">018
<option value="019">019
<option value="020">020
<option value="021">021
<option value="022">022
<option value="023">023
<option value="024">024
<option value="025">025
<option value="026">026
<option value="027">027
<option value="028">028
<option value="029">029
<option value="030">030
<option value="031">031
<option value="032">032
<option value="033">033
<option value="034">034
<option value="035">035
<option value="005">036
<option value="005">037
<option value="005">038
<option value="005">039
<option value="005">040
<option value="005">041
<option value="005">042
<option value="005">043
<option value="005">044
<option value="005">045
<option value="005">046
<option value="005">047
<option value="005">048
<option value="005">049
<option value="005">050
<option value="005">051
<option value="005">052
<option value="005">053
<option value="005">054
<option value="005">055
<option value="005">056
<option value="005">057
<option value="005">058
<option value="005">059
<option value="005">060
<option value="005">061
<option value="005">062
<option value="005">063
<option value="005">064
<option value="005">065
<option value="005">066
<option value="005">067
<option value="005">068
<option value="005">069
<option value="005">070
<option value="005">071
<option value="005">072
<option value="005">073
<option value="005">074
<option value="005">075
<option value="005">076
<option value="005">077
<option value="005">078
<option value="005">079
<option value="005">080
<option value="005">081
<option value="005">082
<option value="005">083
<option value="005">084
<option value="005">085
<option value="005">086
<option value="005">087
<option value="005">088
<option value="005">089
<option value="005">090
<option value="005">091
<option value="005">092
<option value="005">093
<option value="005">094
<option value="005">095
<option value="005">096
<option value="005">097
<option value="005">098
<option value="005">099
<option value="005">100
<option value="005">101
<option value="005">102
<option value="005">103
<option value="005">104
<option value="005">105
<option value="005">106
<option value="005">107
<option value="005">108
<option value="005">109
<option value="005">110
<option value="005">111
<option value="005">112
<option value="005">113
<option value="005">114
<option value="005">115
<option value="005">116
<option value="005">117
<option value="005">118
<option value="005">119
<option value="005">120
<option value="005">121
<option value="005">122
<option value="005">123
<option value="005">124
<option value="005">125
<option value="005">126
<option value="005">127
<option value="005">128
<option value="005">129
<option value="005">130
<option value="005">131
<option value="005">132
<option value="005">133
<option value="005">134
<option value="005">135
<option value="005">136
<option value="005">137
<option value="005">138
<option value="005">139
</select>
<font face="Arial, Helvetica, sans-serif" size="2">
<input type="submit" value="Buscar" class="boton" name="B1">
<input type='hidden' value='1' name='field'>
<input type='hidden' value='dnot.csv' name='csv'>
</font><font color="#FFFFFF">.**</font></font></p>
</form>