Mounting Linux NFS on to Windows NT running reflection

Hello,

When I try to mount a NFS drive from my Debian Linux Sparc-20 system to
Windows NT , running Reflection(X windows application) desktop, I get
the following error

Reflection NFS: NFS Logon failed: A PCNFSD error occurred. The server
could not be reached.

Do I have to setup anything other than /etc/exports for Windows?

Sundar