Dear Software Users :-) Prof. Cheng DONG software ist quite interesting. It it really usefull for for data smoothing, background subtraction, Kalpha2 elimination, peak search and indexing, etc. And for those people that use imaging Plate, another freeware software (one of the best i used) can be found at http://www.umh.ac.be/~poly/XRay/X-Ray.htm I strongly recommend this two softwares!! Congratulations for both researchers (software developers!!) Yours Sincerely, Hannes Fischer