UltraVNC

Yes, it works!
I entered in MS logon setup "Administrators" in Group 1 and enabled "Local".
Then I pressed Apply and selected not the current user but the option below: same user but with a password.
Then I could connect with username/password.

Thanks!
This info should be in the FAQ.

A minor bug is found in the MS Logon Setup.

When the server is running on XP, the local administrators group should always be allowed to access, but if all the entry of the three groups are empty, the server will reject any connection.

On the other hand, if any one of them have something input ...

My sisters computer has Windows XP Home en had ultravnc 1.0.2 installed and I could always connect to it using MS Logon-I (username/password).

Now I have ultravnc 1.0.5.3 installed on her computer and I can no longer use MS Logon-I to connect to it. Only simple VNC password works.

I did everything ...

I installed Ultravnc 1.0.4RC6 on Windows Vista Home Premium and installed the winvnc service.
From another computer with Windows XP I can connect with ultravnc viewer to the Vista computer using only a vnc password.
I tried New MS Logon but on Configure MS Logon Groups: UltraVNC Security Editor I ...