Network Connection 1

Hi,
new machine with Vista pre-installed. IE7 not connecting to Internet. If I
"make new internet connection" it informs me it is already connected, so I
don't proceed. Ping to outside world works, network connection has
automatically found ip address etc. Not my machine so I don't know what extra
set up for internet occured before problem given to me. Nothing complicated,
just the computer, the modem, and an ethernet cable.
The only network connection visible in Vista is "Network Connection 2".
Seems to spend a lot of time in "limited connection" before deciding to fully
connect. Seems to revert to limited connection when IE7 attempts to connect,
but that effect is a bit inconsistent.
My recollection of XP is that when network connections are deleted they
don't entirely disappear. Is there somewhere in Vista to look for a possible
"Network Connection 1"? How would I get rid of it or connection 2 if I found
one?
thanks