I also tried this without any luck although it did think a little harder whne I use Tivo with first caps out of frustration :-) However I am using an NZ HD tivo so it is possible the login might be different

To clarify do you use the MAK address with any characters between the numbers/letters or do you scrunch it up to be a 12 digit alphanumberic sequence?

If you use characters do you use an en dash? "-"

If you get in can you change the login password - I am guessing not.