How Do I Find Which User Is Logged In?

There are two ways you can find out on windows about the user you  logged in. One is to press control+alt+delete and the windows security window will appear. It will tell about the user name who logged in. Secondly click on start>shutdown. A window will appear asking what do you want window to do? Click on the drop down box and it will tell you about the user name. The message will be 'log of username'.

You can use "net session" at command prompt to find the remote users using your computer. It will show you the Computer Name which the user accessing from and User name.