Do you see that message when making a File Sharing connection from Mac OS 8.6 or 9 to Mac OS X? To get rid of it and make a connection, simply assign an IP address to the computer.
Symptom
When you try make a File Sharing connection from a Mac OS 8.6 or 9 computer to a Mac OS X computer, an alert box with this message appears:
The connection is not made.
Solution
The computer at which you see the alert must have an IP Address assigned to it before connecting to a Mac OS X computer.
If you do not know how to assign an IP address, see "Mac OS: How to Get an IP Address for Connecting to the Internet".
Tip: You can use this solution even if you do not intend to connect to the Internet. If you use any routing, firewall, or proxy products, be sure that port 548 is not blocked between the two computers. This is the port used by File Sharing.