For Windows 7, x86: http://download.micr...ws7-x86-enu.exe (via winrumors)
For Windows 7, x64: http://download.micr...ws7-x64-enu.exe
For Windows Vista, x86: http://download.micr...sta-x86-enu.exe
For Windows Vista, x64: http://download.micr...sta-x64-enu.exe
Source
For Windows 7, x64: http://download.micr...ws7-x64-enu.exe
For Windows Vista, x86: http://download.micr...sta-x86-enu.exe
For Windows Vista, x64: http://download.micr...sta-x64-enu.exe
Source