Yes.
There's no reason why it shouldn't run on Windows 8.
No. When attempted to install, the installer will display the message "this version is not compatible with Windows CE".
Yes. OpenOffice should be available in the repository for Linux, and is available on OpenOffice's website for Windows.
Yes.
Absolutely ! I've been using OpenOffice on this Windows 7 computer ever since I bought it. It works perfectly.
There should be no problem running OpenOffice on Windows 10 and OpenOffice has always been able to read Word files (there may be problems writing some of those files back out as the same Word format due to licensing issues, but if you intend on switching to OpenOffice you will be saving as OpenOffice format not Word).
Yes.
No reason why not - providing the document was saved in a format OpenOffice can read. Windows 7 is the operating system - OpenOffice is a program.
Yes - Open Office will work with Windows 7.
There is no such thing as Vista office. If you mean office 2007, yes, you can run office 2007 on windows xp. If you were to use OpenOffice instead, you could ensure compatibility by having the latest version installed on every machine which you might use, be the operating system Unix, Linux, Mac OS or any version of MS Windows. Just a thought. In my opinion, OpenOffice is much simpler and faster to use. And it's free.
Yes. You must have Service Pack 2 or later installed.
Office 2007 will run on Windows7 but some changes made and released in Office 2010 take better advantage of the Windows7 interface.