Hi Alan,
Welcome to this Microsoft Project newsgroup
Yes. Format/Bar Styles... , click on the Name below Milestone and Insert
Row (it must be positioned AFTER the normal milestone entry). Type in
"Milestone Completed" (or whatever you want to call it), select the
Appearance you want (say diamond coloured green), in the From and To cells
select Actual Start for both, and OK. Now when you mark the milestone as
100% complete, Project will fill in the Actual Start and the diamond will
turn green.
FAQs, companion products and other useful Project information can be seen at
this web address:
http://www.mvps.org/project/
Hope this helps - please let us know how you get on
Mike Glen
MS Project MVP