under the link mem posted there is "ITE ide gigraid driver" or the silicon image sata raid. I would assume one of those is what your are looking for, both are exe's, both extract to folders. Under the ITE all you need ot copy would be with win2k/xp folder which is 33k, the sata one forms two folders, 1 for raid 1 for not raid, copy the appropriate one.
ITE would be used if you are running a pata raid
the silicone image would be used if you are running sata raid