Sei ancora un po' vago :quipy: ....

ti faccio un esempio dal quale puoi trarre spunto
codice:
<script language="javascript">
function passa(ff){
	ta = ff.NomeTextArea
	s1 = ff.NomeSelect1.options[ff.NomeSelect1.selectedIndex]
	s2 = ff.NomeSelect2.options[ff.NomeSelect2.selectedIndex]
	s3 = ff.NomeSelect3.options[ff.NomeSelect3.selectedIndex]
	ta.value+=s1.value+' - '+s1.text+'\n'
	ta.value+=s2.value+' - '+s2.text+'\n'
	ta.value+=s3.value+' - '+s3.text+'\n'
}
</script>
<form>
<select name="NomeSelect1">
	<option value="1">uno</option>
	<option value="2">due</option>
	<option value="3">tre</option>
</select>
<select name="NomeSelect2">
	<option value="10">dieci</option>
	<option value="20">venti</option>
	<option value="30">trenta</option>
</select>
<select name="NomeSelect3">
	<option value="100">cento</option>
	<option value="200">duecento</option>
	<option value="300">trecento</option>
</select>


<input type="button" value="passa" onclick="passa(this.form)">


<textarea name="NomeTextArea" cols="50" rows="10"></textarea>
</form>