If you still want the .INF file for the color profile, download it directly from Dell's support site (search for "E170S" in the Drivers & Downloads section).
The Dell E170S monitor does not require a traditional "driver" for basic display functionality (showing the desktop). Like nearly all modern monitors, it uses a standard Plug-and-Play (PnP) protocol. Windows will automatically detect it as a "Generic PnP Monitor" using the built-in Microsoft driver.