I use SMBFS on my A4000T and my Amithlon to access my NAS volumes.
smbfs WORKGROUP=myworkgroupname User=myusername Password=mypassword Volume=Vol1 Service=//MyNAS/Volume_1
smbfs WORKGROUP=myworkgroupname User=myusername Password=mypassword Volume=Vol2 Service=//MyNAS/Volume_2
This mounts Volume_1 on my NAS box as Vol1: and Volume_2 as Vol2: on the Amiga workbench.
I have in devs:internet/hosts (of Roadshow) added the IP address and name of my NAS at the bottom of the file.
ipaddress MyNAS