I was unable to get afp or smb to work using an IP address. Our NT system names are in WINS, not DNS. Something everyone should take note about. When I put the remote system name into my host file and then try to access it using the name, it worked. Suddenly I was prompted for a domain, username and password. Sadly, this didn't get me in. The shares are open to everyone, so I don't technically need a username and password. However, it won't let me in. Two steps forward, one back.
It also sucks that spaces are not allowed in share names. I hope that gets resolved soon.