[Help] EU GC/CD Key format

[omg_lol]

Im looking for the format for EU gamecards and EU cd keys,
Please post like this:

"If your saying the gamecard or cd key

number of digits per box (example would be the format of a US gamecard is 4-6-5-6-4)"

Also if you know how can you please post with how to generate numbers + letters in a VB text box?
I know how to generate numbers by themselves

'4-6-5-6-4

           Dim r As New Random()
           TextBox6.Text = r.Next(1, 9999)
           TextBox7.Text = r.Next(1, 999999)
           TextBox8.Text = r.Next(1, 99999)
           TextBox9.Text = r.Next(1, 999999)
           TextBox10.Text = r.Next(1, 9999) 

[Kansky]

cd key - 6-4-6-4-6
dunno about time car never bought one

[omg_lol]

k, well thx