ASP无组件上传文件的问题！~急！~

<%
dim upload,file,formName,formPath,filename,fileExt
dim ranNum
call UpFile()
'===========无组件上传(upload_0)====================
sub UpFile()
set upload=new UpFile_Class '建立上传对象
upload.GetData (1024*1024*5) '取得上传数据,此处即为5M

if upload.err > 0 then
select case upload.err
case 1
Response.Write "请先选择您要上传的文件　[ <a href=# onclick=history.go(-1)>请重新上传 </a> ]"
case 2
Response.Write "文件大小超过了限制5M　[ <a href=# onclick=history.go(-1)>请重新上传 </a> ]"
end select
exit sub
else
formPath=upload.form("filepath") '文件保存目录,此目录必须为程序可读写
if formPath="" then
formPath="../UploadFile/"
end if
'在目录后加(/)
if right(formPath,1) <>"/" then
formPath=formPath&"/"
end if
for each formName in upload.file '列出所有上传了的文件
set file=upload.file(formName) '生成一个文件对象
if file.filesize <100 then
response.write "请先选择您要上传的文件!　[ <a href=# onclick=history.go(-1)>请重新上传 </a> ]"
response.end
end if

fileExt=lcase(file.FileExt)
if CheckFileExt(fileEXT)=false then
response.write "文件格式不正确，[ <a href=# onclick=hi