how to install xcrysden in windows?
['Unpack the *. tar. ... ', 'Define the XCRYSDEN_TOPDIR and XCRYSDEN_SCRATCH environmental variables (XCRYSDEN_TOPDIR should point to XCrySDen root directory).', 'Create the XCRYSDEN_SCRATCH directory.', 'Launch the program as xcrysden.', 'From time to time clean the $XCRYSDEN_SCRATCH directory.']