nowhere
Here's how to take apart an Acer Aspire 5100 and replace the hard drive. Check out the link.
hard drive, definitely.
Because it will not be notebook compatible. The Standard XP setup CD might not have the supports drivers specific for the notebook.
Notebook computers usually have hard drive capacities ranging from 160GB to 1TB. If the notebook is going to be a desktop replacement, one should go with one that has a larger hard drive.
Recovery disk
Hard drive. Usually only a few screws. As long as your ok with cloning the old drive to the new one, you will need a usb caddy and some software (eg gparted boot cd)
Drive the old broken wheel stud out, and drive a new one in. Purchase the new stud at any auto parts store.
Yes, the Sony VAIO P 8400 notebook computer does have a slot loading optical drive feature built in.
put it on to a usb drive then download it onto your PC
Yes. Most of the notebook has inbuilt DVD RW drive.
Depends on the model 1 or 2.
You should check your laptop manufacturer's website for details on how to replace the hard drive. If the drive is user-replaceable they should have the schematics on how to do so. When you replace your drive, remember to get a drive of the same speed. If you get a faster one, you might cause too much heat build-up in the case.