They will not connect to cable or dsl service. For that you need a router.
So, if my recollection of the rest of the conversation is correct, you had been using a Linux box to connect to the WAN of your provider and running through a hub (I'm guessing).
You will need to buy the wireless router. Which at this point isn't bad...because the price point has fallen so low that it should be cheaper that way.
When I wired the house the routers will still a bit pricier than a straight access point.