The Amiga Ram disk is dynamic, that is when you throw a 200k file in it, it allocates only 200k the other memory remains to the system/ when you delete it the memory is released.
In windows I believe is static, that is that if you allocate 100mb of ram disk then you loose it until you decide to unmount it.
That is the main difference I believe of the Amiga Ram disk and the other systems ram disk.
So you can`t "create a ram disk for Windows 2000 pro that runs and acts the same as on the Amiga?"
(correct me if I`m wrong)
:EDIT:
(I didn`t see that there was a second page in this topic :-) Ferry said already about dynamic Ram Disk)