<%
dim i,id,rs
for i=1 to Request("checkbox").count
id=Request("checkbox")(i)
set rs=server.createobject("adodb.recordset")
rs.open "delete from info where 自动编号 in ("&id&")",conn,3,3
set rs=nothing
next
conn.close
set conn=nothing
%>

conn.execute("delete info where 自动编号 in ("&id&")")

rs.open最好不要执行select语句以外的SQL语句。