Do you have an evaluation version of Windows 2000 Server?
See Microsoft articlw Q250920:
http://support.microsoft.com/directory/article.asp?ID=KB;EN-US;q250920
Excerpts from the article:
"This article describes the behavior of the Windows 2000 Evaluation version and what happens when the 120-day evaluation period expires."
"When Windows 2000 generates the stop message and restarts, the following event is recorded in the System event log:
Event ID: 6008
The previous systemshutdown at hh:mm:ss on xx/xx/xxxx was unexpected."
See the article for the resolution.
(REMOVE SPACES from the pasted URL.)
Maxwell