I would like to present a program "HaftiX".
HaftiX is a computer PC application which allows transforming any picture, image or photo into cross-stitch pattern (a chart). Thus you can quickly prepare your own diagram along with a legend. You can make clock face too (video imanual: http://www.my-cross-stitch-software.com/pomoc_en.shtml). HaftiX includes tools for editing and optimization of pattern.