You can't modify the auction once bidding has started. If you could...post a photo of both screens working on your facebook page....then just post the link in the comments section. This is a very high dollar item for your first auction so I would also suggest that you verify your phone number with Listia. Thank you!
Definitely watching. I already have an original DS and a 3DS, so I don't really need this, but if it's cheap enough around the last hour, I'll still bid. Good luck with the auction!