Error in php script, or may be in apache installation

["Antonio Rodriguez" <arodriguez31@cfl.rr.com>]

I am testing some php script in my home network, from my win98 machine keep
getting

Method Not Allowed
The requested method POST is not allowed for the URL /test/writing.php.

I have `chown www-data test' and `chown www-data test/* ' to no avail

the post method is simply from a form, here goes the piece of code:

<form action="writing.php" method="POST">
<textarea name="message" rows="5" cols="30"></textarea><p></p>
<TABLE align=left cellPadding=5 cellSpacing=7>
<TR>
<td><input type="submit" value="Write"></td>
<td><input type="reset" value="Erase"></td>
</tr></table></form>

Any ideas what can be wrong?
Thanks