To have this visible and correct on the form, you'd need to utilize the Timer event of the form. I think something like setting the timer intervall to 1000, and something like this in the on timer event:
[tt]me!txtTimeStamp.value = now[/tt]
But, to timestamp records, I usually don't display the timestamp on the form, but use the before insert event of the form when I need the creation time of the record, and the before update event of the form when the timestamp of the last edit is necessary (using similar code as above, to assign values to my CreatedTimeStamp, LastEditTimeStamp controls)
Roy-Vidar