As I mentioned in my notice I have attempted to use both Miami and Miami DX to no avail.
This is the TCP/IP layer. The network is up and running, now you need some software to use it.
As already mentioined you can use Samba to show your Amiga's drives in the network and you can use SMBFS or SMB-Connect on the Amiga to use your PC's drives. The PC has such software built in.
Another possibility would be to install a FTP server on one computer and use a FTP client on the other to access files.
Bye,
Thomas