Weirdly enough, adding one of those INFs, then attempting to add the other, results in nLite saying that the driver has already been included. The "press S" bit I'm referring to occurs well after the F6 prompt - just prior to selecting a HD to install to. If I don't select a mass storage driver and try to install, I get an error about Windows not having any drives to install to. I'm absolutely stumped. I've poked around in txtsetup.sif, and I can see the drivers in there, but I have absolutely no idea what the lines referring to them mean. The gd31244.sys line appears twice, though - once with a bunch of commas and the number 1984, the other line has a lot more numbers in it, one of them being 4_ (reference to disk 4?) Cheers for the suggestions, but I don't seem to be getting anywhere at all - running nLite under 2k3 makes no difference, nor can I see why it should. Using "multiple driver folder" only results in one driver being available for integration, as above. Is anyone able to interpret txtsetup.sif files?