Either dl from jap servers using your jap account (instructions here)

or make a disc (like I did) here
and instructions here

These are the programs he used
Extract Now:http://www.extractnow.com/
Deep Burner: http://www.deepburner.com

Walkthrough Video: http://www.youtube.com/watch?v=cvtbHT7Nb7M

But I used winrar and windows to burn.

When you insert the disc it will show up as mixed media and thats ok. Just go to demos and its there.
Enjoy.

How easy is the demo in japanese?

You guys are a bunch of techno-punks!

THANKS INSULT!

I never thought I'd be able to do it without the J-Account. Huzzah!

Hmmm, when extracting, it didn't ask or look for the other 4 parts, and when I manually did, it just over-wrote what was already extracted, which probably won't work if I burn it.

DL all of them to the same folder then just extract the first. I tried with only part 1 and it said files were missing so I dl'd all of them and then extracted part one only and burned the containing extracted folder. It works.

New Demo up on XBLM. Its completely different from the first post and I believe this one is co-op only. If you plan on trying this do it soon because its coming down in a short while.

I personally won't be dl'ing it as I just don't dig the RE4 style. I'm a RE2 man.

Anywho, here's the link. Oh and its Gold only because of the online multiplayer-ness.
http://marketplace.xbox.com/en-US/games/media/66acd000-77fe-1000-9115-d802434307d4/?of=1

Thanks for the reminder! I wouldn't want the same thing to happen that happened to the Left 4 Dead demo (they took it down before my brother and cousin could download it).