Finally I cracked the demo to play LAN games.

[D3adG0d]

Ok after playing with the SP demo forever I was able to get a MP demo key. In about 5 minutes of playing with the MP version I was able to crack it to play LAN game, I still need to work on some things because the textures and stuff didn't load right.
Here is the link to my screen shots and video.

http://www.extremeevolutions.com/crysis/crysis_demo_hack.htm

[WeReWoLf]

Nice work, now you just need some buddies to play it with :D

[D3adG0d]

I might try and host a game for people to connect to directly by IP.

[supra]

sounds like u need hamachi (http://hamachi.cc)

[qube]

or wait 4 days to play the full game