That would be the best idea, btw to change the timestamp on the video you have too;
1. Install cam driver from disk.
2. Delete everything from your mem card.
3. Make a text document on the card called: TAG.TXT
4. In the text document enter, (Obv change time and date to the correct one).
[date]
2010/01/16
21:36:00
^Must be on seperate line, with a space after each also.^
5. Save, unplug camera and turn off.
6. Plug camera back in, and turn on... The text document should have dissapeared now.
7. Record your video, and viola! The timestamp is correct