复选框四个值 插入同一列asp

<%

feiji= Split(request("feiji") ,", ")
for i=0 to ubound(feiji)
response.write(feiji(i)&"<br/>")
next
%>
<form name="myfrom" action="" method="post">
<input type="checkbox" name="feiji" value="feiji">飞机
<input type="checkbox" name="feiji" value="huoche">火车
<input type="checkbox" name="feiji" value="keche">客车
<input type="checkbox" name="feiji" value="zijia">自驾
<input type="submit">
</form>

你把获取的值加起来就可以了吗？
这样
feiji=request("feiji")
huoche=request("huoche")
keche=request("keche")
zijia=request("zijia")
zonghe=feiji&","&huoche&","&keche&","&zijia
不行找我！