There is a conflict between the driver for the LightJockey PCI card and service packs 3 and 4 for Windows 2000 that can cause the PC to crash upon driver installation.
Additional information and a link to an updated driver can be found on the LightJockey forum at http://www.martin.com/forum/topic.asp?TOPIC_ID=4852
The driver compatibility problem has been solved in version 2.6, build 6, which is available for download from http://www.martin.com/service/Software/Logs/LightJockey_sw.htm.