To install Samba on AIX 5.3 you will require the Linux Toolbox CD and in order to install the entire set of Samba, you will need the following filesets:
Connection to Windows shares is acheived by using the following commands..
SMB connections can be made with:
# smbclient //[server-name]/[sharename] -U [username]
Shares can be mounted using
# mount -v cifs -n [server-name]/[username]/[password] /[sharename] /[mount-point]