How to find out user of remote computer

[Kshaeta]

Given an IP address or computer name, how can I, from a Windows XP
machine, find out the name of the currently or most recently logged on
user, without having to jump through hoops or remote connect to their
registry or something like that?

I know that in Unix, there is the finger command... I'm looking for
something like this.

thanks

--
Bill Tkach
MSP, A+
visual{period}eyes{period}this{at}gmail{period}com