Reading Multiple Select

I use a multiple select in a form in an asp page. When I go to the target page, I want to be able to read out the items selected on the previous page. How can I do that?

<form method="post" action="compare1.asp" name="Compare">

<select name="motorcycle" multiple size="20">

<%While not RSItems.eof%>
<option
value="<%=RSItems("ID")%>"><%=RSItems("Brand")%>&nbsp;<%=RSItems("Type")%>
<%
RSItems.movenext
wend
%>

</select>
</form>

How can I read out the items selected?