Question: how to install xcrysden in windows?
Answer: 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.