Well. It was working okay last night after uninstalling Norton, so I proceeded to the next step, uninstalling Symantec Live Update. After uninstalling it, I shut down my computer, as it said it needed to reboot to finish the uninstall.

Turned it on just now and the wireless is dead. So now I'm doing the recovery disks again, and will try not uninstalling Symantec Live Update and see if I can keep my internet that way. I am really, really pissed off by this. It's ridiculous that these so-called security programs should have the power to completely fuck up your computer if you try to uninstall them. However, at least with Norton itself uninstalled, Symantec Live Update shouldn't have anything to do (it gives you updates for your Symantec programs, and if I have Norton uninstalled, there are no Symantec programs to update), so leaving it on there shouldn't interfere with anything. Getting Norton itself off is the important part, the rest is just decluttering (can you believe out of the box, my 200 GB hard drive is only 86% free?).

So cross your fingers that this works.