The Windows Vista/7 driver may work. Others have managed to get the 9 to work but Dell doesn't have a Win8 driver. First are you installing the printer for the first time to the computer or did you upgrade the OS and are reinstalling the driver? If you have done an upgrade or attempted to install once before, you will need to delete any jobs in the printer queue.(Win+X > Control Panel > Hardware and Sound > View Printers and Devices. Select your printer and then see what's printing. Cancel all jobs.) If you can't delete the jobs, press the Windows key and type in Command Prompt. Right click on the appropriate program and at the bottom of the screen, select Run As Administrator. Type in "net stop spooler" followed by enter (without the quotes). Follow that line with "net start spooler" again followed by pressing enter. After you see the responses, restart the computer. Then unplug the printer from the computer. Then uninstall the printer driver. (Win+X > Device Manager. Expand the Printers section. Right-click on the printer and then select uninstall driver.) Manually remove the printer from the Devices and Printers list. (Win+X > Control Panel > Hardware and Sound > View Printers and Devices. Select your printer and then click Remove Device.)
The driver itself is available here: http://www.dell.com/support/drivers/us/en/19/Product/dell-966
. Make sure that you select the x64 version if you have a 64-bit version of the OS. Most desktops and laptops currently sold have the 64-bit version of Windows 8. An older computer that was upgraded may have the 32-bit version of the OS.
Find the install file that you downloaded from the Dell site. Right click on the file and select Properties. Under the Compatibility tab, choose Always Run in Compatibility Mode for Windows 7 (use the drop-down menu to select the OS version). Click Apply and then OK to save the setting. Now double-click on the installer to run it. You will need to acknowledge the UAC to allow the program to run. You will need to repeat this Compatibility step on the Setup file after extracting the files from the downloaded file. Keep track of where the extraction places the files; my computer showed the default location of C:\dell\drivers\R165704 .
Tablets with Windows RT probably can't use the driver since it isn't offered through the Windows Store.
I hope this helps.