I have an AMD K7 system running Windows XP Pro. I loaded the Sonic Stage 3.4 software package linked to from this page, first reply. The instructions are excellent, though I think my problem is unique. Maybe I have a conflict somewhere. The only way to get Sonic Stage to load is by running it in Windows 98 compatibility mode. Why? I am still unsure. Anyway, if you are having similar troubles, try this before freaking out. Levon