Getting SID from USER and USER from SID

Sometimes when administrating a network there is a need to know which code belongs to the USER for the operating system. this code is regarded as the SID or Security Identifier.

Getting USER from the SID:

You can use a tool called Sid2user
http://www.chem.msu.su/~rudnyi/welcome.html

Usage:
sid2user [\\computer_name] authority subauthority_1 ...
 
 
Getting SID from the user:
You can use a tool called User2sid
http://www.chem.msu.su/~rudnyi/welcome.html
 
Usage:
user2sid [\\computer_name] account_name


Taken from http://netprobe.blogspot.com/