How do I make a wireless Internet connection work?

I've got a laptop that can support wireless connection. Currently I've got Internet through broadband ADSL, but I was thinking of using this connection on the desktop computer and use wireless on the laptop. So what do I need? I've heard something about routers and wireless adaptors, but how exactly... show more I've got a laptop that can support wireless connection. Currently I've got Internet through broadband ADSL, but I was thinking of using this connection on the desktop computer and use wireless on the laptop.

So what do I need? I've heard something about routers and wireless adaptors, but how exactly do these work? Will they work with ADSL? Are there specific routers/adaptors depending on the type of the connection, or any one will do?
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