No, as win2000 has a more advanced management of users. The common startup folder is in C:\Documents and Settings\All Users\Start Menu\Programs\Startup
I guess you need administrative right for that machine to write in there.
A warning though, with these folders, they are named differently in localized versions of windows.
On my french win2000 for example it is C:\Documents and Settings\All Users\Menu Démarrer\Programmes\Démarrage and the english version would have no impact. There is a function in the API to get the right folder name for any given system, but one can hardly use it in a batch file.
On a NT4 (english) system the folder would be
C:\WINNT\Profiles\All Users\Start Menu\Programs\Startup
Damn M$ always changing their minds...