Wayne,
It is possible to alter the registry to allow multiple connections to a single XP Pro computer. It has nothing to do with admin accounts as you would be connecting remotely. It is fairly complex and not advisable.
I still fair to see why you don't see the obvious, easy and quick solution to your problem. If you had 100 users all 100 users could log onto AC at the same time.
User 1 uses Computer 1
User 2 uses Computer 2
User 3 uses Computer 3
and so on...
Now just like if you are at the office, all the users can access AC at the same time, so...
why is it difficult to install LogMeIn on each computer so that User 1 can log in to computer 1 and use AC, and User 2 can log in to computer 2 and use AC.
And, as to above. The AC folder on the "main computer" has to be shared anyway for the network in the office.
If you really are hell bent on logging into the main computer with multiple users, then get a server using Windows Server 2003 and above and its extremely more robust terminal services will allow you to do this.
I simply fail to see why you choose to to do it this way. As stated, using some third party methods such as VNC or complicated workarounds XP can be accessed directly by more than one user. It is not, however, recommended by most experts. Just install LogMeIn on each person's computer that needs to log in and let them access AC on that particular computer.
