Strange Shared Computers?

Help!

I was browsing through my mac and I opened up a finder window and on the left I see this!



I live at home with my family but no one in my house named their computer andy or anything like that.

Everyone in my family uses a PC except me. I can connect to "andy" but I can't connect to the other 2.

My router is secured with a wireless access list and a password. I have even tried changing the password to see if that would help!

Unfortunately it's still there! Am I freaking out or has my router been hacked?

 

Alrighty thanks

That explains a lot. I was freaking out for a bit thinking I got hacked :S