I think I found what I was looking for in the Nokia 800. Haven't bought yet but the salesmen weren't real helpful at no less than 3 different stores when I described what I was looking for. I noticed the Nokia 800/770 in the display case and asked what they did, and I found what I think I was looking for by accident. I need internet access without my laptop. I'm looking for this access for only one reason and that is to trade online. Since I'd be entering trades, I'd be entering my passwords to access the trading website. What type of security issues do I need to be aware of. I'm very secure with my home connection and would hate to find out my account was emptied because I wanted alittle convenience using this technology. I could probably use just a cell phone but I also want to be able to view charts which makes the Nokia seem like such a dream. I'd only be connecting through wifi. Also, the stores have both the 770 and the 800 - is one better than the other for my purposes. Thanks for everyone's input in advance.

As long as you only trasnmit confidential information over https (SSL 3/TLS 1.0) connections you should be adequately protected. Even if someone successfully eavesdropped your encrypted https communication it's extremely unlikely they would be able to decrypt your messages in any reasonable amount of time (we're talking years to brute force decrypt a single message, as many as 30 years)

You should always use HTTPS connections for confidential information, particularly finanacial, even when you're not using WiFi - your home connection could easily be hacked at the exchange if anyone was sufficiently motivated!

Definately get the N800, it's more powerful and quicker than the 770 - the 770 is "last years model" - and the N800 will receive improved versions of the Opera browser and Adobe Flash whereas the 770 will not. Screen size and resolution are identical on both devices; the N800 has double the storage (256MB) and RAM memory (128MB) of the 770.

As for the trading, make sure the web sites you intend to use will work in Opera on the N800/770, and that performance is acceptable.

Seconded. HTTPS is the way.
Other than that, it's quite common to think of wi-fi networks as less secure than a home broadband connection, while the opposite is in fact true. Imagine a home with a broadband modem, a wi-fi router, and a PC. Now, where is the biggest danger? Well, on the wi-fi end the only people that can reach it have to be in close range. Maybe there's a handful. In the broadband end, on the other hand, there are millions and millions.. try setting up a *nix computer directly on the broadband modem (no firewall in between), start tcpdump or something, and connect the modem. Wait 20 or so seconds. See the probes coming in. It was like this already years ago. (I still sometimes take a peek at the corporate external firewall for a laugh.. there the bombardment is constant. It never stops.)
On a home connection it's also possible to somehow get a trojan or a keyboard sniffer installed on the home PC by accident, and then your security is gone. On an open wi-fi hotspot, with an N800, you're actually in a better position.. there's very little chance for anyone to get to install some trojan on it, you're NAT'ed, you're just connecting for a time through https, and then you're done. If anything, the danger is from the actual Internet, not the wi-fi: There's always the possibility of man-in-the-middle attacks and so on.

if your running a home router like a linksys wireless router, your NAT'ed as well. how would you be in a better position? most open wifi stations use no encryption so anyone can get on, including those who are better at hacking that a lot of us. you arent safer just because of NATing

But that was my point. The wi-fi itself isn't the biggest danger, it's the broadband connection. NAT'ing is a good way to avoid probing attacks (from the internet), and wi-fi implies NAT w.r.t. the internet proper. I didn't mean there is a distinction between home wi-fi and hotspot wi-fi, just that wi-fi isn't as big a danger as a direct broadband internet connection is. Obviously inside the same wi-fi network you're open (that's why you should use https for sensitive data).

I've used my N800 to trade with www.foliofn.com. No worries.