I'm not a pro at this, but...
That last bit about the web not working... do you have any other machines there that can connect? If so, then its possible that your eMachines has a motherboard issue. But keep reading...
The first thing you could try is to see if its a problem with Windows, or a problem with hardware.
Get into the BIOS and see if the drives are recognized there. If the BIOS wont see them, neither will windows.
If the BIOS doesnt
see them, then try updating it (if possible). Then open the case and make sure the IDE cables are snugly connected.
If the BIOS does
see them, then check your IDE config:http://www.5starsupport.com/info/techinfo2.htm#no-cdrom