How can I install the Mresist on x64 bit instead of x16 or x32 bit computer?
In some cases you can run 32bit applications on 64bit installations, but the reversed process is not available, which means you will need a 64bit application for 64bit computing. If the software is 64bit, and you have a 32bit computer, then the only way to install it is by either using a dedicated version or emulating another OS through virtualization.
You can do this using VirtualBox: https://www.virtualbox.org/wiki/Downloads
You can use the following tutorial: https://www.virtualbox.org/manual/ch01.html#gui-createvm