Wifi Connection

Where does the internet wire come from? If I understand correctly, you plug this internet wire into your laptop to get internet access right now. You would like to be able to use your laptop and/or other components wirelessly to gain same internet. Your laptop probably already has wireless capability built in.

If I have assumed the above correctly, then you simply need a Wireless Access Point, to which you would plug your internet wire, and would broadcast that signal so that your laptop could access wirelessly. Here is just one example of a WAP:
http://www.cdw.com/shop/products/default.aspx?EDC=447403

If a WAP is not as readily available, then you "could" purchase a combination wireless/router appliance like the Netgear A/B/G that you suggested, and plug your "internet wire" into the WAN port. If doing this does not work completely (depending on where your internet wire comes from and other functionality you may or may not use), then you could disable DHCP on your wireless/router appliance and plug your internet wire into one of the switch ports.

All you need is a WiFi Access Point like this

http://tinyurl.com/s9l49

Here you would plug the CAT5 Cable into the Up-link Port of the WiFi Router and then with a Wired connection setup the router to your Internet connection requirements and then you can configure the WiFi connection on the NB.

If however you mean you want to use Wireless Broadband you need to talk to your ISP as they have Aircards that plug into a PCMCIA Port which allow you to connect wirelessly to their network and these work on the Mobile Phone Network not the Wireless Frequencies.

Col