That depends on what exactly you mean by that. You want to run Windows XP within Windows 7 you need to install Microsoft virtual machine. It's free. You want to replace Seven with XP, then you will...
No. Windows 7 is a newer, more advanced operating system. Both operating systems were launched by Microsoft Corporation. XP was releases on October 25, 2001 and Windows 7 on October 22, 2009. Other...