use this code from Marcel G
userAgent = Request.ServerVariables("HTTP_USER_AGENT")
'############### Spider
If inStr(userAgent,"bot") > 0 or _
inStr(userAgent,"perl") > 0 or _
inStr(userAgent,"java") > 0 or _
inStr(userAgent,"libw") > 0 or _
inStr(userAgent,"crawl") > 0 or _
inStr(userAgent,"DA ") > 0 or _
inStr(userAgent,"msn") > 0 or _
inStr(userAgent,"google") > 0 or _
inStr(userAgent,"download") > 0 then
Response.Redirect "spider_site.asp"
end if
put this in the top of inc_header.asp