Ok i have windows xp, dial-up, aol 9.0 pretty fast internet for dialup. I wanted to download the upgrade to 4.0.4 from 3.8.4 but when i did it just took a second to get 1% done with download, then just zoomed to 100% and when i clicked "open" it said not a valid Win32 application. Cant anyone help? Or maybe i should switch to kazaa...