1. Need to install drivers. Check the modem brand and model and
go to the manufacturer's site to download the drivers if you have
lost the CD. After installing, restart the PC.
2. The limitation of wireless is speed. For wired connections, say
the maximum speed transferring by cable is 100Mbps, you will get
that. For wireless, no. At any one time, the stated bandwidth is
always chopped into half. Say the maximum is 54Mbps, the best you
get is 27Mbps. Coupled with reality, it can drop to a few megabits
per second.
3. That's the Internet Connection Gateway. If you are using a
modem, this will show up. Usually when this shows up, you might
have problems with connections. Disabling it and enabling it will
sometimes solve the problem, but most of the time this doesn't
happen. This has to disappear before you can use the Net
properly.
