phpwiki save button

Hello everybody. My name is Tim and I am new to this list. I am not a programmer and don't even play one on tv. I've recently installed and have started to attempt to customize phpwiki. I need to modify the way the "save" button works. I not only need it to do the save, but I would like it to append a date and time stamp to the text being posted to the wiki. My first choice would that the line of text being typed would be prefixed with the stamp rather than slapping it on the end. This I believe would be the most ergonomically convienient for those reading that which has been posted. Is there anybody out there willing to give me a hand. TIA, Tim B.