Sorry about the fat fingers. Disregard the txtStart..
First of all, the timer is always running, so there is no need to "stop" the timer.
Second, if you set the default value of txtTime to 0, then it will start at 0 every time you open the form.
Finally, in order to help you insert the record into the table I will have to know how the table relates to the form.
Is your form bound to this table? If so, then just set the control source for the txtTime text box to the [elapsed time] field in your table.
If not, then you will have to go find the record in code.
How does the record relate to the data displayed on the form? Is the person's name on the form, and so you would like to go add an [elapsed time] record to that person's name when he/she closes the form?