It depends: Is the router yours, or do you have permission to use it? If yes, then you can use a wireless-enabled laptop to connect to it, and if the router is connected to the internet, then you will be able to access it. However, if the router is not yours, or you do not have permission to use it, then you cannot connect to it, and thus the Internet. If in doubt, talk to whoever owns the router, or a local computer shop.
The Linksys Dual-band Wireless A+g Notebook/laptop Router is good.
There is no difference between a laptop or a desktop when setting up a router. You should use an Ethernet cable when setting up your router, and use the wireless only after it's setup.
yes
the easiest way is with a wireless router so that you can use a wireless laptop or wireless adpated PC anywhere in the house
Yes, you can. Just your desktop to the router which have recently got. You will able to use your laptop as well as your desktop.
There are two ways to connect your laptop to a router, wired and wireless. If your laptop is fairly new, it will likely support both types of connections. The easiest way to connect your laptop is wired. If your router is in the same room as your laptop, or if your router doesn't have wireless functionality, then you should wire it. Just get a standard ethernet cable, with the length depending on how far you have to connect it. However, if you want to be able to walk around your house or even go outside without cables holding you back, set up a wireless connection, if your laptop and router support it. You have to use network connections to connect to an available network, which you will have to set up using software that comes with your router. Once you are connected, you can go anywhere and receive internet as long as you are still in range of your router. Getting a more powerful router will increase your range.
serial cable
no
I assume you mean - how can you connecy your ps3 to the internet/network via your laptop If you have a Windows 7 laptop then download this program called "Connectify" It enables your laptop to be used as a wireless router and you can connect devices such as game consoles (ps3, xbox etc.) to it and use internet from your laptop. Heres the website for the free program: http://www.connectify.me/download/index.html
Yes, however, your internet speed will only be that of the G router which is comparably slower than that of an N router.
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.
A laptop is a PC. You don't need a desktop PC to configure a router, you can use a laptop to do so, by connecting to the router via a network adaptater - either via wifi or ethernet. Both ways of connecting are included on laptops nowadays.