Hello- I've searched for hours and have only found old articles. Problem: - Can't upgrade from XP to Win 7 due to lack of ACPI support Config: - Parallels 4.0.3848 - Mac Pro with plenty of memory and latest Snow Leopard (10.6.2) I've searched all over this site and it says to go to the actions menu (doesn't exist) and click 'prepare OS for upgrade' (again, doesn't exist in v4). I've selected the image and Parallel's read the DVD and selected OS Windows 7 to prepare for upgrade. Still the lack of ACPI is getting in the way. Have found other people with this problem. Help! Anyone! Thanks!