...for an answer to your issue. It's a couple of post further down in the :

Quad, Yes, Windows 2000 IS Different

Basically, it comes down to Win2000 doesn't have "msconfig" installed, but it can be, if you wish, by downloading it from the link I provided. Still, there are other ways to shut down unnecessary programs and services in Win2000, as I mention in the link above and at the bottom of the original tip in the link below:

How To Shut Down Unnecessary Start Up Programs

Hope this helps.