I'm glad I never made the switch. I played around with Vista RC1 and RC2 and that was enough to tell me it wasn't for me. When I bought my laptop about 1 1/2 years ago I got a certificate for a free "upgrade" to Vista but I passed, I stuck with XP MCE. My main desktop is running XP Pro and my old desktop that's used for filesharing runs XP Home. I never had any experience with Win ME, thankfully. I did have to suffer through Win NT at my old job at Amana. I ran a machine called a rotovac (thermo-forming machine) that heated up large plastic sheets and formed them into refrigerator cabinet liners and the PC that controlled it used Win NT. I hated that computer with a passion!