If your html reads
<SELECT name="number">
<OPTION value=" "></OPTION>
<OPTION value="1">1</OPTION>
<OPTION value="2">2</OPTION>
<OPTION value="3">3</OPTION>
<OPTION value="4">4</OPTION>
<OPTION value="5">5</OPTION>
<OPTION value="6">6</OPTION>
<OPTION value="7">7</OPTION>
<OPTION value="8">8</OPTION>
<OPTION value="9">9</OPTION>
</SELECT>
Then anything selected will appear in the variable named $number, ( or $_REQUEST['number']) depending on your php version.
Mark.