Win98 is finally running almost every (good)audio software out there without a glitch !! Why does anyone wish to downgrade to XP ?? All the freebee programs for the X5D (based on Win 3.1) run beautiful on Win 98 which runs Cakewalk PRO 9.0 seamlessly.. In fact the X5D is the only synth (out of 26 connected)that does not interface thru my outboard midiports. Still using the homemade cable from an old Mac printer & serial mouse cables spliced together.!!! Hey by the way, I have over 50 banks of custom patches with the cakewalk .ins definitions written for them and text files to match should any of you X-series users what them. Comes in very Handy when you have 1,138 voice polyphony capabilities !!!