What your saying doesn't really make sense. Is this a Samba connection(SMB) ftp, or something else?
An AFP wont connect. It works better if you type for example 'smb://192.168.1.133' the prefix tells OSX how to connect. File sharing should be enabled on both machines before attempting a connection.
The user name must match what the system writes your user file as. For example mine could be John, but the system logs it as John_2 because that is what it actually is, and was when i created it. Make sure there are no spaces, caps is off, etc. Both have to be correct.