Locating a users hostname with just the username

[Xire]

Hi guys,

I need to do exactly as the title states, I need to connect to a users machine but I do not know the hostname/IP all I have is the username. Is there a way I can find the hostname via command prompt?

 

[Xire]

Cant contact them, they are away from the machine all week, but it has been left on.

I got a way round it by using LanDesk, cheers