A new version of PyroDVD has been released, version 1.2. PyroDVD is a free dvd player designed for 2k/XP though it should run on 9X it is untested on that platform. You'll need the VB6 runtimes and at least DX8.1.

Homepage: http://www.pyrosoftware.net
Download1: http://www.winsite.com/bin/Info?16500000037177
Download2: www.pyrosoftware.net/download/PyroDVD_120.exe