This has the two files that the installer asks for under Windows 2000, pmxusd.dll (from here) and twotCPL.dll (from my Windows 98 machine after I installed the drivers on it). I think it works ok, although I have hardware trouble with my scanner so I'm not 100% sure.
The following files are found inside the driver download file.
|pmxusd.dll||45.1 KB||27 Dec 2001|
|twotCPL.dll||45.1 KB||19 Jun 2000|