Re: delete printer files
You don't tell your OS, but in Windows 7 I uninstall a printer from Start>Devices and Printers. But http://windows.microsoft.com/en-us/windows-vista/Add-or-remove-a-printer shows it can be done from Control Panel also. I assume that's the way you did it.
What is your e:-drive? I've never seen a PC where Windows (and the drivers) weren't on the c:-drive. And can you delete (other) files from that e:-drive?