Well, I checked the system, and eventually got it working when I found that Firefox that been marked as 'blocked' and I clicked allow. It worked again for the rest of the night, but now refuses to work. I checked everything but it still doesn't work, even though I've got the router and the cable hooked up to my laptop (which is working, otherwise I wouldn't be typing this).
Now, have I fucked my partner's computer up, or is Zone Alarm still dicking with it somewhere, and can I somehow 'reset' it's values so it doesn't want to keep blocking the internet anymore? I'm sorry for the wall of text, but I've been trying to see what's wrong for the last few hours and it's really pissing me off.
Much love to anyone who can help me out with this.