<hr>Not only do you have to turn off Simple File Sharing, but if you want to access shares on an XP machine from other machines on your LAN without passwords, you have to open the local policy editor and allow "no password" access.<hr>I have been running Windows XP since Beta1 and have never had to do either of the above. During beta I was running a 4 computer peer2peer network, one with XP Pro, one with Windows 2K and 2 with Windows Me. The only time I had any problems with any of the machines seeing the XP machine was when I forgot to turn OFF the Firewall. The workgroup was always found and all of the other computers were seen from the XP machine. Once I defined some sharing including printers the XP machine was seen and accessed by the other machines. The printer from the other machines were found on setup of XP and have worked ever since.
Now All machines are running Windows XP, 3 Pro and 1 Home Edition. These were ALL clean installs from the older OS's and the RTM on the beta testing maching. Every thing was found and is working.