programming DE1 kit using Quartus 2

When you plug the DE1 device into your computer there should be a window that pops up looking for a driver. Search the c:\altera\<version>\quartus\drivers directory to find a driver. there should be one there. If this doesn't pan out contact altera's customer support. there should be someone who can help you. Though I've never tried It I doubt Xilinx drivers will work with altera's stuff. I have a DE2 for playing around with and above is how I got mine to program.