|Slave your HD to another HD/comp ( no need to bolt it in, just cable it & leave it outside the case ) You may have a choice of jumper settings on the master HD, such as master with slave or ms. Copy your stuff ( don't forget your emails & address book ) onto the host HD or other media.|
Now open My Computer, making really sure you select the correct drive, right click on it & select > Format.
When finished, put it back in the eMachine ( no need to bolt it in until you know everything is Ok. ) & boot from your Operating system CD, remove all existing partitions & proceed with a new install in NTFS.
You will need your MB CD to finish the install.