You can't restore the installed program because this might lead to errors. If you have your data saved on another partition, you can download and install the program again, on your Windows 8 computer. It's advised to install the 5.2 version to avoid any compatibility issues. To load your data into the freshly installed program, just copy the files to an USB stick (or choose another transfer method that works for you) and load them to the new computer. You shouldn't experience any problems.