How to paste files to windows shares and access those shares from the shell command line?

[David M. Karr]

Using Ubuntu 8.10.

When I set up Ubuntu 8.10 several months ago, I had no trouble 
connecting to shares on a Windows box on the local network.  When I use 
Nautilus to explore, I can see those files.

One thing I have trouble with with these shares is that I often am 
unable to paste files or directories that I had "Copy"ed from the same 
Nautilus session.  I've tried numerous times, making sure that I copied 
the file or directory correctly, and then when I go over to the file 
share, the "Paste" option isn't available.

The other issue that I have is that I dont know how to see those shares 
except through nautilus. Is there a way I can get to them through the 
shell on the command line?  I noticed annotations like "smb:/...", but I 
couldn't get that to work.