Players

http://www.bsplayer.org/
Real
Media player
DivX
PowerDVD

Codec

http://www.divxmovies.com/codec/
http://www.divx-digest.com/software/nimo_lite_pack.html
http://www.elecard.com/download/#mpeg2decoder (seems to have fcuk'd up some avi files) (this is an MPEG 2 )

Guides

http://www.doom9.org/
http://dvdrhelp.com

Which Codec

http://www.headbands.com/gspot/
http://www.headbands.com/gspot/download.html

Usenet

http://www.forteinc.com/agent/index.php