I have several very basic beginner questions. If would be terrific if someone can help. Please--assume I know nothing. You'll need to spell pretty much everything out for me. I'm not very computer-savvy at all. I want to purchase a laptop and air card as both a way to trade while traveling, and also in order to have a complete backup method in case my home desktop or home cable connection has problems. I have been back and forth, back and forth, between the cellular people and the computer people, trying to find someone who can talk to me at my level. It's hard to get geeks to slow down the geek-speak, and sometimes it's also difficult to get a straight answer out of someone who is in a hurry to sell you something. 1. First question can only be answered by traders: can you let me know what your experience has been with real-time streaming data (quotes, charts) using cellular access? Is the speed adequate? 2. Are all modern computers compatible with these 3G networks, or do I have to purchase a computer with some kind of special hardware? 3. Is there any kind of hardware installation that is necessary with these cellular cards, or can you just plug them into a USB port (or other type of port) on any computer, install the software, buy the monthly plan, and you're good to go? 4. Some of the air cards appear to also have memory capabilities--would these be able to take the place of a flash drive? 5. Finally, a netbook question--I'm considering one of these 10-11 inch notebooks, but I would have to add memory, since they all seem to max out at 2GB RAM. My home computing has been successful with 2GB of RAM, so I know that would work. I would buy a 1GB computer and add 1GB. Now then, if the answer to my question #3 is "yes, there is an installation issue" -- could I possibly run out of physical room on a small netbook by trying to install all this stuff? Thanks!