I find the solution to my problem on a Google forum http://groups.google.com/group/micro...5f7450823c8d83
I hope that will help somebody with the same problem
I quote the answer:
_______________________________________________________________
"The problem and the solution are on the XP Home computer that can't be
accessed. Run XP's Network Setup Wizard on that computer -- that's
sometimes all that's needed. If that doesn't fix the problem:
1. Download and install the Windows 2003 Server Resource Kit Tools
from
http://go.microsoft.com/fwlink/?LinkId=4544 .
2. Click Start | All Programs | Windows Resource Kit Tools | Command
Shell.
3. Type these lines at the command prompt. The second and third
commands are case-sensitive, so type them exactly as shown. Note the
"+r" in the second one and the "-r" in the third one:
net user guest /active:yes
ntrights +r SeNetworkLogonRight -u Guest
ntrights -r SeDenyNetworkLogonRight -u Guest
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)
Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.
Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com "