The NEC SuperScript 1260 has a parallel printer port. So you would need a parallel to usb adapter. These aren't very expensive; depending on the brand and length you'll pay between $8 and $15. See https://www.amazon.com/TRENDnet-Parallel-Converter-10-6-10-9-TU-P1284/dp/B0007T27HS or https://www.amazon.com/Sabrent-Parallel-Printer-Adapter-CB-CN36/dp/B00IDU0T1Y Alternatively, if you have a desktop, you can find a PCI or PCI-e add-on card with a parallel port, depending on the slots available in the system. These will be closer to $20 to $30. Then you need a standard parallel printer cable. Many computer parts sites, including Amazon.com, will have both.
A bigger problem may be the printer drivers. NEC did not update the drivers after Windows XP. (Some XP drivers will work under Vista.) NEC doesn't supply the drivers on their site: https://support.necam.com/Printers/Drivers/
. They refer you to the original driver CD that came with the printer. A few sites may have these drivers online. However, I haven't seen a link to a known trust-worthy site with the XP driver.
I hope this helps. Please add a comment if you need more information.