I currently use a 20" iMac with 233 GB HD, 512 mb RAM, 128 mb VRAM, and a 2 GHZ intel core duo processor. I plan to upgrade the RAM to 1.5 GB in the near future and (when I purchase Leopard and Vista Home Premium) part 50GB of my HD using bootcamp to Vista. Is this good enough? Thanks, your answers are always appreciated!