yes
Windows Vista and Mac OS are types of computer operating systems.
Windows Vista and Mac OS X are examples of computer operating systems.
Windows XP is an example of an OS. Windows Vista is an example of an OS. Windows 7 is an example of an OS. Mac OS X is an example of an OS.
Windows XP and its predecessors.
No, it's not. But Vista has similat to OS X interface, at this point it was derived from OS X.
Windows media center is available with Windows Operating systems - Vista, Windows XP Media Center Edition, and all editions of Windows 7 except for Home and Starter. If its a Vista OS may be you can call it a vista media center, so you need your computer to have Windows Vista OS.
You cannot run OS X on a windows machine.
Windows Vista is an OS, so it's software.
appears to be a OS that's a mix between mac's OS X and windows vista.
running an instance of Windows Vista from inside a Windows 7 OS
XP, if you can scratch Vista and go for Windows 7
After installing you need to delete vista os by deleting drivers and install xp ones again .