Encryption SHA256

Hi Everyone,

        I need to encrypt the password entered by the user. Does anyone know the code for SHA256?? please keep it as simple as possible. What i was able to find on the internet is this:

    Protected Shared Function SHA256_Encrypt(ByVal Txt As String) As String

        Dim sha As New SHA256Managed()
        Dim ae As New ASCIIEncoding()
        Dim Hash() As Byte = sha.ComputeHash(ae.GetBytes(Txt))
        Dim sb As New StringBuilder(Hash.Length * 2)
        Dim ndx As Integer

        For ndx = 0 To Hash.Length - 1
            sb.Append(Right("0" & Hex(Hash(ndx)), 2)) <----- the word right not being accepted
        Next

        Return sb.ToString

    End Function

Now for some reason the word right is not being accepted and when i go over the word it tells me: "Cannot refer to an instance member of a class from within a shared method or shared method initilizer without an explict instance of the class"

this was taken from:

http://www.thescripts.com/forum/thread384017.html

Any ideas???

Thanks!