I am using Excel 2007, but am building templates that will be used by others with more recent versions of office. I would like to include a calendar control. I have Microsoft Date and Time Picker Control 6.0 (SP6) on my machine, and with minimal code have it working well. But before I send it out, I thought I'd better check to see if it will be compatible with newer versions of Office. Will my files work with newer versions? And if not, is there a universal Calender Control that will work on all (Excel 2007, 2010, and 2013) Excel versions?