I had one go at accessing my Vista pc from the network got a user name and password box to display, I used a blank password the first time and it then (Vista home)locked me out. havent been able to fix it yet
I have installed the rkit
Windows Server 2003 Resource Kit Tools
http://go.microsoft.com/fwlink/?LinkId=4544
Then enter the following commands. (Attention: they are case sensitive.)
net user guest /active:yes
after this one System error 5 Access Denied
ntrights +r SeNetworkLogonRight -u Guest
after this one Error Open Policy then a number -1073741790
ntrights -r SeDenyNetworkLogonRight -u Guest
after this one Error Open Policy then a number -1073741790
I will boot in safe mode and have a look later on for policy editor
thanks