No, but you are going to need a wireless router, also known as an access point, between the laptop and the cable modem.
Your router should have a wireless network. Read the manual for how to enable it and set up a key, then connect to it with your laptop. Or just use a cable like with a desktop.
Subscribe to an ISP for internet such as IVC Telecom and then connect your laptop to the modem with an ethernet cable or connect wirelessly using wifi, assuming your laptop has a wireless network card.
Step 1. Unplug ethernet wire from desktop computer. Step 2. Plug the ethernet wire you just removed into your laptop's ethernet port. Step 3. When finished browsing the internet or when portability is desired, disconnect the ethernet cable from laptop and return to the port on the desktop.
You can connect your laptop to the Internet with a cable modem, sure. You will need an Ethernet cable to do that. If you want wireless internet, you will need a cable modem, and a wireless router as well.
Just connect the Ethernet cable (RJ-45 crossover) to the laptop .Then you will get the connection.
Just get a wireless 802.11 adapter for the laptop to connect to the internet.
To connect your desktop or laptop computer to your television you will use a vga cable. Information about how to connect the devices can be found at compnetworking.about.com/od/.../a/connect-pc-tv.htm .
Either connect via a wireless network, connect through a 3G network or connect your laptop with an ethernet cable.
Try BRIDGING the wired and wireless network adapters on the laptop: For Windows see http://www.microsoft.com/windowsxp/using/networking/expert/crawford_02april22.mspx
with a router
You'd have to use an ethernet cable.
plug display cable on laptop with the broken screen's CPU