NOTE: This page is a work in progress.
The NTOSKRNL Extender for Windows 2000 allows the use of (some) newer drivers. It works by forwarding exports to the real NTOSKRNL, and implementing its own versions of NT 5.1+ kernelmode functions.
Put the NTOSKRN_.SYS file in %windir%, and then patch your driver with a hex editing program, replacing any references to NTOSKRNL.EXE with NTOSKRN_.SYS