Problem with Coordinated Search using SQL

I am attempting to use a coordinated search with SQL to a MySQL database. I have not been able to get it to work properly because I do not know how to get the values of the select statements to my query. Can anyone provide some guidance please!!

Here is what I'm doing:

<FORM action="[process-search]" method="POST">
<B><FONT color="#0000cc">Choose a manufacturer and/or styleand click go!</FONT></B><BR>
<INPUT TYPE="hidden" NAME=mv_search_map VALUE="
  mv_searchspec=search1
  mv_searchspec=search2
  mv_searchspec=search3
  mv_searchspec=search4
  ">
  <INPUT TYPE="hidden" name="mv_search_field" value="department">
  <INPUT TYPE="hidden" name="mv_search_field" value="subcategory">
  <INPUT TYPE="hidden" name="mv_search_field" value="manufacturer">
  <INPUT TYPE="hidden" name="mv_search_field" value="style">
<SELECT name="search3">
     <OPTION selected value="">All Manufacturers

<OPTION value="Manufacturer1">Manufacturer1

<OPTION value="manufacturer2">Manufaacturer2

<OPTION value="manufacturer3">Manufacturer3

    </OPTION>
</SELECT>

  <INPUT TYPE="hidden" name="mv_matchlimit" value="14">
<INPUT TYPE="hidden" name="mv_search_page" value="vineyard_results.html">
<INPUT TYPE="hidden" name="mv_searchtype" value="sql">
<INPUT TYPE="hidden" name="search1" value="[value choice]">
<INPUT TYPE="hidden" name="search2" value="Vines Rootstock">
<INPUT TYPE="hidden" name="mv_substring_match" value="yes">
<INPUT TYPE="hidden" name="mv_coordinate" value="yes">

   <SELECT name="search4">
    <OPTION value="">All Styles

<OPTION value="V shape">V Shape

<OPTION value="Standard">Standard

    <OPTION value="Others">Others
    </OPTION>
   </SELECT>

---------------

One of the values I'm using here comes from the previous page--included in a one click link. I was able to do this before I started using MySQL. Am I missing anything??

Thanks in advance,

Humberto Reyes

htreyes@earthlink.net