You have two ways to run Windows on a Mac. One is bootcamp which lets you run Windows OR OSX, but not both at once -- you have to reboot to switch. Bootcamp runs XP well, and will do everything Windows can do on the Apple hardware. When in XP it IS a Windows machine.
Parallels provides a VIRTUAL Intel box on which you can install any of a number of different OS's including most versions of Windows. The virtual machine (VM) runs in parallel (Ever wonder where Parallels got its name?), but it *is* a windows machine when it has the focus, and except for the limitations of the virtualized hardware, it has all the plusses and minuses of Windows.
So to address your questions:
1) 1.5 to 2 gig of RAM on the Mac with 512 or 768 Meg allocated to the VM, plus as much disk space as you need for your Windows stuff -- typically a few gig for the OS plus whatever you install.
2) Given the limitations of the virtual hardware, yes. There is no 3D video hardware for example.
3) Same as a Wintel box.
4) The "hard disk" for the Windows installation is a regular file in OSX and the OSX tools will show it as such. Memory is whatever you allocate, and in use while the VM is running. Windows will show Windows resources.
5) I use it without major problems.
6) I don't understand the question.
7) The current version of Parallels is not Vista compatible, but Vista support has been promised.
Last edited: Jul 24, 2006