I have an aging AMD-based Opteron system. It has developed a severe cooling problem and needs to be replaced. I use it to run a few Windows applications that can't be run on my Power Mac G5. I am thinking of buying a Mac Mini to run the Windows applications but have a few questions. (1) Can the Mac Mini operate as a "headless" system or do I need to obtain a KVM to use my existing Cinema Display, keyboard, and trackball? (2) Are there any known problems using Boot Camp to install Windows XP on a Mac Mini? (3) Would it be better to use Parallels for the Windows environment?