Prichard replies to you questions.
(1)#grep 901 /etc/services
nimsh 3901/tcp
nimsh 3901/udp
swat 901/tcp

(2)#ypcat services |grep 901
ypcat 1831-142 the domainname has not been set on this machine.

(3) " One can administer samba without swat. It is just a convenience. "
Really needed for a newbie. Books advise not to try and edit smb.conf manually.

(4)Can you ping 192.168.0.144 from Windows PC?
Microsoft windows XP [version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\>ping 192.168.0.144
pinging 192.168.0.144 witn 32 bytes of data:
Reply from 192.168.0.144: bytes=32 time<lms TTL=255
Reply from 192.168.0.144: bytes=32 time<lms TTL=255
Reply from 192.168.0.144: bytes=32 time<lms TTL=255
Reply from 192.168.0.144: bytes=32 time<lms TTL=255
ping statistics for 192.168.0.144:
Packets: sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = Oms, Maximum = Oms, Average = Oms

Ping from banora back to XP
# ping 192.168.0.130
PING 192.168.0.130: (192.168.0.130): 56 data bytes
64 bytes from 192.168.0.130: icmp seq=O ttl=128 time=O ms
64 bytes from 192.168.0.130: icmp-seq=l ttl=128 time=O ms
64 bytes from 192.168.0.130: icmp-seq=2 ttl=128 time=O ms
64 bytes from 192.168.0.130: icmp-seq=3 ttl=128 time=O ms
AC -
192.168.0.130 PING Statistics 4 packets transmitted, 4 packets received, 0% packet loss
round-trip min/avg/max = 0/0/0 ms

(5)On your Windows PC what does nslookup 192.168.0.144 return?

C:\>nslookup 192.168.0.144
*** Can't find server name for address 203.49.70.20: Non-existent domain
server: sy-dns04.tmns.net.au
Address: 139.134.2.190
*** sy-dns04.tmns.net.au can't find 192.168.0.144: Non-existent domain

nslookup on banora back to XP
# nslookup 192.168.0.130
Server: sy-dns03.tmns.net.au
Address: 139.134.5.51
*** sy-dns03.tmns.net.au can't find 192.168.0.130:Non-existent host/domain

(6)Have you browsed to 192.168.0.144\public from your Windows PC?
Tried 192.168.0.144\public and http://192.168.0.144\public in XP/IE7 and W2K/Firefox with no luck.

(7)Looking at the logs smbd is running.
# lssrc -a
Subsystem Group PID Status
syslogd ras 10578 active
sendmail mail 10836 active
portmap portmap 8342 active
inetd tcpip 8786 active
snmpd tcpip 9034 active
hostmibd tcpip 9292 active
snmpmibd tcpip 9550 active
aixmibd tcpip 9808 active
muxatmd tcpip 14448 active
biod nfs 14706 active
rpc.statd nfs 13934 active
rpc.lockd nfs 13178 active
qdaemon spooler 12982 active
writesrv spooler 10350 active
ctrmc rsct 4948 active
IBM.ServiceRM rsct rm 14202 active
IBM.ERRM rsct-rm 5522 active
IBM.CSMAgentRM rsct=rm 13688 active
IBM.AuditRM rsct rm 16274 active
Ipd spooler inoperative
clvrnd inoperative
LUMlmd lumls inoperative
LUMgdb lumls inoperative
Truncated a couple of dozen more inoperatives off list for brevity.

Prichard I am just trying to to transfer files across my P2P network. I orignally tried sendmail with attatchments and that was a disaster. Got lost in a myriad of permission's denied using ftp and telnet. Now Samba is not as simple as the books make out.
A guy has suggested WinAxe on my XP machine.
Open to suggestions.
Pity as with your help I felt I was nearly there with Samba.