Tech q- showing timestamps on pictures

I have a fujifilm finepix z3 point-and-shoot with some pictures on it that need to show the timestamp. When I drag and drop the pics to my computer the time/date on the file is correct but I can't figure out how to print the timestamp on the actual pictures themselves. Any ideas?!

http://shareme.com/showall/Add-The-Date-time-To-Photo.html

Thanks! I thought for some reason it might be a camera setting but I couldn't find it...

My camera has a setting so that it puts it on future photos, but I don't think it will go back and put it ones I've already taken. But I am unfamiliar with your camera, so I dunno.