1) Firewire is a way of connecting 2 devices physically, by wire. It has nothing to do with the internet.
2) Flash is a way of presenting graphics on a web page. If you can't get to a simple text page, it has nothing to do with Flash.
Check the internet connection in the tablet. Make sure that you're connecting to YOUR router (you do have a wireless router, right? Wifi doesn't just come out of the air.) and that you don't have a "limited" connection. Sometimes a computer will connect to a stronger signal, but one that's not yours, so you're connected to the router, but not to the internet. (It's like looking in the window, but you can't reach the candy inside the store.)
Getting wifi to work is sometimes just "turn it on and it works" and sometimes it's a sleepless night, trying all sorts of things until you realize that you made one stupid typo and it took hours to notice it. There's no single "do this and it'll work" answer to an internet connectivity problem.
