Windows 2000 and OS/2

I am creating a new domain using a a server with Windows 2000 as the operating system. In addition, I have to use Active Directory to control the domain and users. This is where my problem starts. I have a P370 PGC server running OS/2 as the operating system. I am able to ping both servers, but when I try to use “NET USE” from my Win2K server, I get an error 53. When I try the “NET USE” command from a NT workstation, it works.