Re: 32-bit? 64-bit?
Yes, the drivers are different. Each printer has 32-bit and 64-bit drivers. Dell never updates their website to reflect all the 64-bit drivers. I have been helping people here for a few years and located the drivers for the printers.
Since you have Vista/Windows 7 you need to disconnect the printer, download and run the patch(printer cleanup Utility), each printer has one, until it prompts you to restart your computer. Restart your computer. Download and install the proper drivers. You'll get a message, the printer is not connected. Connect the printer at this time(powered on). More information for the drivers and the patch can be found at...
Both printers will work with Windows 7 in the compatibility mode, if needed.
Original poster, If you have solved your problem, can you please mark the correct thread(s) with your solution. Thanks
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#MicrosoftMVP - Windows Expert-Consumer April 1, 2012 to March 31, 2015