| It depends how many IP addresses NTL will give you.
A Wireless access point is good if you already have a device to do internet sharing.
If you don't have anything to do interenet sharing, then you need either a wireless cable router, or wireless broadband router. Technically they've both the same thing, in that they have an ethernet port on one side for the cable modem, and wireless/switch ports on the other side for your computers.
Yes, you'll need a wireless card for each of your computers.
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