Basically you can't. There are so many parts in an iphone that are produced just for that, that you can't get anywhere else. Not much point in buying an Iphone, taking it apart and putting it back together again...
LOL, yes, it can definitely scratch. It will be scratched, but not easily. You can get an iPhone case and screen protector to protect your iPhone from scratch. You can have a look about apple accessories on Topons.com
Yes
Yes, although it may appear scratched if you have a screen protector because what appears to be a scratch is actually a rip in your protector, and if you run your fingernail through the scratch and you feel your scratch indent, it's not a scratch in your iPhone screen, it is only a rip in your protector
It's a cell phone screen. Of course it scratches.
No. The screen is a special kind of glass that is very hard to scratch. It's not impossible to scratch, but it shouldn't be a problem unless you like to throw your iPod on the ground a lot =]
The better option would be to build it from scratch. That way you can add your own creativity to it. The best place to find building plans is in the Popular Mechanics Magazine.
mediorits and cheese wait the moon was build with cheese scratch that
Depends on what you mean by from scratch, and what kind of computer. Anywhere from minutes to years.
There are many websites that allow you to build a website to fit your personal and business needs. Godaddy.com offers a good price for tutorial help in starting a site from scratch.
The safest case would be a silicone case that will not scratch or damage your iPhone and will help protect and cushion it should you drop it.
That depends a lot on what you want to build.
The best way to find a technician to build you a computer from scratch is to look around your local area first then do some internet research and you should find them.