rpc.pcnfsd or alternative for it

Hi Gurus,

I've a number of clients who need to authenticate to a Solaris 9 server and
they use Humming bird NFS client on their PCs for that. I searched for pcnfsd
for Solaris 9 on the web and archives in vain, I'd appreciate if you gurus can
point me to some resources or alternatives for pcnfsd.

Thank you in advance for all your responses.