^ yeah, but really, do you like to have all that crap in your computer when you buy it from dell or whatever. and first turn it on.
well, theres one point i just realized, you'd have to buy an operating system disc, or maybe you can borrow one from your friend, but you still need, Microsoft office, burning software,and you need to install drivers, things you can only do if you know what you're doing
but if you have a friend that might owe you a favor, you can have them help you, but also, in some discount computer stores where the chinese ppl work, you can probably, (i'm not so sure) buy all the parts and pay a labor fee of no more than 40 or 50 bucks, and they build it for you, they install all your drivers and software, and offer repairs for pretty cheap.
(edit: of course, you need to have some time on your hands)