Ding Backdoor help

[LovesDoomBuggies]

I'm working on doing the ding backdoor on my computer as per these instructions:

http://flyertalk.com/forum/showpost...01&postcount=16

I get as far as putting in my id and cksum numbers and then I get the other link to click just like the instructions say I will (something about a headline...). But that link just takes me to a Southwest error message. Any idea what I am doing wrong?

Thanks.