主题：用户名和密码如何获得

Dim m As New MailSender
m.Host = "smtp.21cn.net"
m.Account = "xiaoliu"
m.Password = "xiaoliu1234567"
m.From = "xiaoliu@Sina.com.cn"
m.To = "meili@Sina.com.cn"
m.Title = "初稿已经完成"
m.Content = "附件为初稿, 请您审阅!"
m.AddAttachments("c:\data\table.txt")
m.SendAsync()

m.Account = "xiaoliu"
m.Password = "xiaoliu1234567"
我如何获得本机的用户名和密码？