|Did you look at the second links? You can repair WinXP or you can perform a destructive factory restore, which in this case, may be a good option. |
You had a root kit infection which is hard to remove and can hide. E machines come with a restore partition on the hard drive. That should still be there if you didn't tamper with it or change the hard drive. You also were supposed to make a set of restore disks to use in the event your hard drive fails, rendering the restore partition unavailable.
If you elect to perform a factory restore and like many users, have not maintained any backups of your personal files, you may still be able to recover them.
Post back with your status regarding the above conditions and I will advise further.