How to load cookies value into password field textbox

Dear All,
What I want to do is in the login field checkbox "remember me". I will store username and password into the cookies. but when i reload it i can only load the username into the text box but not the password field. if you dont mind, can anyone suggest me how to load data into the textbox of password field? my code are as below. Thank you.
Aung
'Save cookies function

If myUser.IsValidUser(txtUserName.Text.Trim, txtPassword.Text.Trim) = True Then
                If chkRememberMe.Checked = True Then
                    Dim CookieUserName As New HttpCookie("UserName")
                    Dim CookiePassword As New HttpCookie("Password" ...