You're saying you have no wired ethernet (it doesn't work), and you have no wireless connectivity? That stinks. Well, when I first started running linux, I had much the same problem. I had to download the application packages myself from the internet on windows, copy them over to the ubuntu partition and install them by hand. I can help you do that, if you'd like. What version of ubuntu are you running? ie, Dapper Drake... and what kernel version?
You should already know what version, but for the kernel version just post the output of