[Samba] Error 16770

[adi at mymachine1.adi-fortuna.com]

  When I try to mount an administrative //mymachine2/c$ share(the shared
  resource is on a  WinXP_SP2 unfirewalled machine) from a Linux machine, using
  the command bellow, I receive an 16770 error message.
  [root at mymachine1 scripts]# smbmount //mymachine2/c$ /mnt/tmp/ -o username=administrator
  16770: session request to MYMACHINE2 failed (Not listening on called name)
  16770: session request to *SMBSERVER failed (Not listening on called name)
  SMB connection failed
  If instead of netbios name (mymachine2) I use the private IP address it is the same result.