Wireless internet needed - how do i go about it?

They are the same thing

Yes and printers as well.

Unless you have a router already (you should have, it's a hardware firewall), you'll need a wireless router.

A wireless router is a single box with a router and an AP in the same box. For your situation, a Linksys WRT54G sounds like a good solution.

Yes, if you have sharing turned on, (software) firewalls set appropriately, etc.

No, they are not. A router provides internet sharing and firewall protection services that an AP doesn't. Unless the OP already has a wired router, they'll need a wireless router.

I wireless NAT router AP or a wire router is about this.

A standalone wireless AP is a bridging device for two networks the existing wire network and the wireless network that the WAP provides. You plug the WAP into the wire NAT router so that the wireless machines can use the wire router as the gateway to access wire or wireless machines on the LAN and the wireless machines can access the Internet via the wire router.

Of course, that's what it's all about. You configure the O/S on the machines to share resources between them and a wire router with stand alone AP or a wireless router with a built in WAP will provide the plumbing.

Duane :)

thanks guys, looks like a wireless router it is. i will get one ordered from fleabay. thanks.