FTP sites located in Network Neighboorhood

Hello I have a question about some information I found in Network Neighboorhood

I have a home PC that is behind a NATed Wireless Linksys and my PC is protected via Zone Alarm. However I went to "Computers Near Me" and I found something very strange there where shortcuts to the following

ftp://ftp.nai.com and
ftp://ftp.debian.org
They where actually links to C:\Documents and Settings\Administrator\Nethood and I deleted them

I know that the debian is a Linux site that acutally got attacked and brought down last week. I was reading an article about it actually went to that site. I have one Virus program running  and just ran an online virus program yesterday plus I am running two Spyware programs (new with Updates)

I know I need to tighten my my Wireless linksys I actaually is it possible that those sights are actaully using my Wireless link and are "on" my network. Or am I just seeing another part of my Cable modems network. This is got me puzzeled any thoughts? Thanks