I'm having a brain fart...what's the DOS command to get your MAC addy?
You can use whatever browser you like, but the script kiddies and hackers go for IE, because it's so ubiquitous.
Actually, I tried your link, and immediately got 'page not found' (or as I call it, Club 404...
When I was setting up my laptop (finally), I could detect 3 wireless networks, and logon to 1 of them, within a few minutes. A lot of people just don't know any better, thankfully you're not one of them.
I don't know your layout, but if there's 1 connection, and 1 computer, wired would work fine. I know you can get up to 100' cables in some computer stores (you're limited to about 600' if I remember correctly..., in a variety of colors. You can also get wired network routers fairly cheap.
It could also be that the site you're trying to get to is just having a bad connection. You might try to contact the site about the problem, maybe they or their ISP could figure out what the problem is.