I work in a lot of Virtual PCs and remotely controlled pc’s via Remote Desktop. It’s gets confusing at times determining which PC I’m working in, especially when I step away for more coffee/hot tea or am interrupted.
BgInfo has really helped with this issue. It takes your current desktop (in my example I just have a plain black background) and overlays current system info, as is seen on my desktop below.
You can pick and choose the details you want to display, and reorder them in any order you want, using the interface.
You can also configure BgInfo to run at every startup, or launch it at your convienience. In my normal day to day setup I selected half a dozen of the most useful items to display, but for my example above I left everything in.
Again, a very useful tool if you are in and out of virtual or remotely controlled machines every day.