Do I need added internet security for a laptop?

I've had my 5 year old desktop secured with antivirus,spyware,firewall,adware,etc. I just purchased my first laptop %26 since I'm now wireless, my paranoia has come up. Aside from the usual antivirus/spyware/firewall protection, do I need to get something with "wifi security", "bi-directional firewall", and bluetooth protection(鈥榖luesnarfing鈥?and 鈥榖luejacking鈥?can allow attackers using easily available software to hack into data held on the laptops, or use the machine as a conduit for other activities)? With all these different security programs I'm starting to wonder if they're really necessary. I'm running vista ultimate %26 IE7 (which have protection %26 encryption), Norton Internet Security, keep my file sharing "off", %26 I'll be installing Windows defender and Yahoo's antispyware. Is this enough to keep my laptop data safe in a public wifi area or do I also have to get more security like the one's I mentioned above? My apologies for the long post %26 gratitude to those who took the time.

Do I need added internet security for a laptop?vincent

In addition to the software you mentioned in your question, I would include establishing a VPN tunnel from your laptop to a hard-wired distant-end server to ensure that any/all traffic between you and the server is not able to be sniffed. Furthermore, if you create a closed VPN tunnel, you can be assured that everything from your laptop must go across the tunnel to get out of your system, thereby eliminating the possibility that while you're connected to the VPN end-point that anyone else can talk to your laptop.