If Minolta does not offer them, Windows does not have them. That unit is pretty dated. You can pick up a Brother Laser Printer All-in-one that is less than $150. I have the Brother HL-2280DW, which has an onboard flatbed scanner.
Have you tried it in W8? Many W7 drivers work with W8.
Also, just looking in my W8 Add Printer menu, note it lists "KONICA MINOLTA" and while the 2300 DL is not listed, KONICA MINOLTA PS Color Laser Class Driver and KONICA MINOLTA XPS Color Laser Class Driver are listed. You might try both of them.
While Microsoft's Windows Compatibility page says that printer is not compatible with W8, it also says it is not compatible with W7. That may just mean not 100% compatible.