You can try to install all the 'parts' which make up IIS from the Control Panel under Programs. for Help:http://www.iyogibusiness.com
IIS is included in the Business, Ultimate, and Enterprise editions of Windows Vista.
IIS (Internet Information Services) is included with most newer versions of NT-based Windows, including Windows 2000, XP Professional, Windows Server 2003, Vista Business, and Windows Server 2008. It is not included in the home versions of XP or Vista, but can be installed manually.
You can not download IIS 5.1. You can only install IIS from the your Windows Installation CD. IIS 5.1 can only be installed if you are using Windows XP. IIS 5.0 comes with Windows 2000, and IIS 6 comes with Windows Server 2003.
Website Baker is PHP software. Meaning that it is run by your webserver (IIS or Apache), not directly by the operating system (Windows, Linux). That is why it is surely Vista compatible.
How to install the IIS on Windows XP
To install IIS, you will need the CD containing your Operating System's installation files. With the Windows CD ready, click on Start, then Control Panel. In the control panel, double click on 'Add/Remove Programs' (2000/XP) or 'Programs and Features' (Vista). Now, click on 'Add/Remove Windows Components' (2000/XP) or 'Turn Windows features on or off' (Vista). Locate and check the box in front of 'Internet Information Services' then click on 'OK'. You will be prompted for the Windows CD - all you have to do now is follow the remaining on-screen instructions, and IIS will be installed.
For Windows Server 2008, it should be IIS 7.
That edition of Windows Vista does not exist. Windows Vista exists in two editions for home users: Windows Vista Home Basic and Windows Vista Home Premium.
No your windows 7 will not deleted
No. Obviously, if you upgrade to Windows Vista, you will have Windows Vista.
No.
Windows Vista is not an option for the iPhone.