I have a problem which I really don't understand how to solve.

I'm connected wirelessly to a network at home with 2 PCs (one notebook and one desktop if that helps).
Until yesterday I saw both PCs on my finder sidebar and I accidentally clicked the "Eject" button on one of them (the notebook) and now I can't add it back, how can I find him? cuz when I press on "Go > Network" the window is empty, it doesn't shows any computer in the network.

This is the screenshot:

( BTW Notice the PC icon and what it shows lol ^_^ )

Thanks a lot!