samba client problems???

Hi,

When I use smbclient from the linux (redhat 7.2) machine, with the following
command, I get connected OK, but when I attempt a MAP from a Windoz 2k box
(with \\10.1.1.77\ethan - and I changed the user and password),
 it doesn't work - it just hangs for a while and says
 "network path \\10.1.1.77\ethan  could not be found"

Any suggestions?

smbclient //10.1.1.77/ethan -U joel
(THIS WORKS GREAT WHEN I RUN FROM THE LINUX MACHINE).

Thanks,
Joel