I have this thing called the SharkPort for my PS2, which allows me to upload and download savegames to and from my PS2 memory card (example: some crazy guy at IGN actually sat and named almost every player on all 100+ teams in NCAA Football 2002, thus, I could download from some site, and then upload it to my PS2 memory card).
So some type of connection HAS been established...but nothing like full read-access to the DVD drive...hmmm
