Open Wireless AP...find the owner?

[Matt G]

So, I got my new wireless network setup today, and the first thing I did was
enable wep, turn off broadcasting, and make sure it didn't accept ssid
"any".  So, I'm fooling around with it, and it's working great.  I installed
netstumbler just to make sure I couldn't find my ap like that.   Mine didn't
show up, which is good, but I found 2 others.  One seems to be protected,
but one of them is totally open.  I can get an ip and get online etc.

Is there any way to find out who they are??  I need to help this guy get his
network buttoned down.  I'm getting full strength signals.  There are no
shared drives that I can find, and no shared printers (so I can't leave a
file note, or print a note.)   Anyone know any tricks?

Matt