关于ASP导出EXCEL问题

<%
dim conn   
set conn = Server.CreateObject("ADODB.Connection")   
conn.Open "driver={SQL Server};server=172.16.11.30;uid=sa;pwd=sa;database=test" 
set rs = Server.CreateObject("ADODB.recordset")
sql = " EXEC master..xp_cmdshell 'bcp test.dbo.users out c:\Temp.xls -c -q -S 172.16.11.30 -U sa "
sql=sql & " -P sa' "
conn.Execute sql,recaffected 
%>