Visionfs configuration problem!

I have re-installed sco unix 7.1.1 box, and Visionfs is installed and configured successful but when i run the "sh /usr/vision/bin/visionfs print --install PRINTERNAME PC-NAME PRINTERNAME" command the system gives me the usage instruction as if i am giving the wrong syntax! any help please!

visionfs print option:

Nothing like your syntax...
see
http://docsrv.sco.com/NET\_vfs/NET_vfsC.defaultconfig.html