怎么获取客户端中指定域的Cookie

如何获取客户端中指定域的Cookie?
做一个asp.net   网站要读取asp   网站中的cookie   ,如果asp.net   不是asp的子域,则如何读取asp域中的客户端cookie?

[解决办法]
http://publish.it168.com/2006/0225/20060225000801.shtml
[解决办法]
Sub Page_Load(obj As object,e As eventargs)
If Request.Cookies( "userid ") Is Nothing Then
response.Redirect( "default.asp ")
End If
end sub