This site is being deprecated.
Please see the official X‑Plane Support page for help.
You should download the Windows installer, not the Linux one, if you are Windows 7. The same one will work for either 32 or 64 bit Windows. It should automatically download the correct installer for your system when you click the blue button on this download page, but if it didn't, you can use the links to download the Windows version.
This site is no longer being actively maintained.