You will generally not be able to use the setup on your eMachines drive to fix this problem. You will need an external source disc containing an installable OS.
You may be able to do it with Sony or other, but not from within the eMachines hard drive. It will lock up on you, because the Windows XP on the drive is designed to do that, as I assume you have already learned.
There are tricks that an experienced user or tech can do, but it doesn't sound like you are yet at that level.
We have been buying Windows XP Home for $64, but the price has gone up due to the fact that people prefer it over VISTA.
You can use a shopping site such as NexTag, Price Grabber, ShopZilla, MoneySavingExpert, or Smarter.Com to find Windows XPHome for $79.99.
That cost may be an easier choice than what has been described above, if your time means anything to you.
You can then use Windows to make your eMachines hard drive pristine, remove all partitions, then install the Windows Partition NTFS, and the OS automatically.
You will then need to install the drivers for the various components. Do you know how to find the drivers?