Dear Prof. Peter, I have downloaded the XCRYSDEN program, but I am not able to install it. Can you please give me some hints to install it properly. R.K.Thapa CMT Research Group PUC MZU Aizawl India __________________________________ Do you Yahoo!? Win a $20,000 Career Makeover at Yahoo! HotJobs http://hotjobs.sweepstakes.yahoo.com/careermakeover