Win2K Pro and Server are limited to 2 processors. You're either
running Advanced Server or Datacenter.
Check your system bios for a HT setting.
Rick
http://www.microsoft.com/hk/windows2000/faq.htm
* Windows 2000 Professional 133 Mhz or higher Pentium-compatible
Central Processing Unit (CPU)
* Windows 2000 Professional supports single and dual CPU systems
* 64 megabytes (MB) of RAM recommended minimum; more memory improves
performance. (32MB RAM minimum supported; 4GB RAM maximum).
* 2 GB hard disk with a minimum of 650 MB of free space*
* Windows 2000 Server 133 Mhz or higher Pentium-compatible Central
Processing Unit (CPU)
* Windows 2000 Server supports up to four CPUs on one machine.
* 256 megabytes (MB) of RAM recommended minimum (128 MB minimum
supported; 4 gigabytes [GB] maximum).
* 1.0 GB free space on hard-disk*
* Windows 2000 Advanced Server 133 Mhz or higher Pentium-compatible
Central Processing Unit (CPU)
* Windows 2000 Advanced Server supports up to eight CPUs on one
machine.
* 256 megabytes (MB) of RAM recommended minimum (128 MB minimum
supported; 8 gigabytes [GB] maximum)
* 1.0 GB free space on hard-dis