I'll disagree with you there. No parts of Watchmen were boring. I thought it was easily the best comic book movie I've ever seen. It actually had depth; who cares if it didn't have constant action, it had meaning. Worth more than one watch IMO. It made me actually think whereas other comic book movies are where you can turn off your brain.
Well from the sounds of it, the best option does seem like a full OS reinstall so... I don't know what to tell you. You could always reinstall Ubuntu for the time being and then when you figure out a way to install Windows again, do that.
He's saying if you don't have an original XP cd but you do have an original XP CD-key, then he's telling you write down your key and download a XP ISO through torrents.
The KA is a truck motor (small truck nonetheless). Hence the torque-iness compared to the SR. People have had lots of success with making big power with just a KA but I've also heard that it's got harmonic/balancing issues which show up at higher power outputs.