It's not MacIntelligent, specifically, but nearly all the Hackintosh sellers are companies that just ripped off work done by volunteers like Netkas here on the forums and the OSX86 project. Psystar is particularly guilty of this.
So people did work for free, released it as open source for the benefit of all, only to see it stolen, used for profit, and not even receive acknowledgement. That's pretty bad.
I don't think Nokia will win. It's a profit grab made using defensive patents, like many patent trolls and other companies are doing these days. Not only will Nokia not win, but nobody would think it bad to buy an iPhone, regardless.
People can argue that copies things, but they engineer their own hardware and software. It's not even comparable.
As to building a computer, I'm no expert, but broadly speaking, it's just a matter of assembling the following components: Case, Motherboard, CPU, GPU, Hard drive/SSD, DVD drive, RAM, and installing the software.
Lifehacker put together a walkthrough:
http://lifehacker.com/software/hack-attack/build-a-hackintosh-mac-for-under-800-321913.php
I'm sure you can find other guides on the internet. Like I said, it's not worth giving money to these parasites. If all they're doing is assembling parts and installing OS X, well, you can do that too. No reason to pay someone else to violate a EULA for you, and PC component prices drop all the time.