TiVo Community Forum Archive 1 (http://archive.tivocommunity.com/tivo-vb/index.php)
- TiVo Coffee House - TiVo Discussion (http://archive.tivocommunity.com/tivo-vb/forumdisplay.php?forumid=3)
-- Not Pleased with Gift TiVo (http://archive.tivocommunity.com/tivo-vb/showthread.php?threadid=181949)

The problem that made me parranoid about this was mistyping the code. I was afraid if i mis-typed it that my credit card would be charged since the service lifetime code was invalid. However, I was able to get around this by not putting my credit card number in until i knew the code would be accepted.