Yes. TiVo does not require a wireless network. It can be connected through a cable to a wired network.
Yes, however a wireless router or switch would be much better suited. Using a hub to provide access to a network or internet is outdated, and can sometimes have complications with resolving IP addresses.
A wireless hub is a place where Internet can be acquired through wireless channels, like WiFi. An example of a wireless hub would be a restaurant that offers free WiFi to its customers. The hub is the WiFi antenna.
Press Settings, then General -> Network -> Wifi. Select the wireless hub by name, and enter the wireless password (if there is any).
Without a hub / router, you can not access the internet. So the benefits in having a hub will be accessing the internet through 2 ways - wireless and wired.
A wireless network is used with out wiers but your internet ill be slower
Wireless network adapter.
On-site support is provided via Internet for the HomeConnect Home Network Ethernet Hub.
A modem, either cable or DSL, is needed from the Internet service provider. If a wireless connection is desired, a wireless router is needed. For a wired connection, an Ethernet connection is required.
It depends if you have public internet in your area or an unsecured network.
If you mean broadband internet, you'll need a broadband modem (usually provided by your ISP), a length of cable, and a network interface card (commonly called a "network card" or "NIC"). If you're trying to set up more than one computer to access your internet connection, you'll have to get a router or a network hub, which will split the internet traffic to each machine (which also need a NIC and a piece of cable). Alternately, if you're attempting to set up a wireless network, you can skip the cables and replace "router or network hub" with a wireless version of same. Each machine which you want to access the network must have a wireless network adapter installed (setting up the network can require a bit of tinkering as well).
Make sure that your wireless network is connected to Internet. Otherwise, Windows and your wireless connection software will have troubleshooting tips for you to follow.