Put a TextBox in a form.
Set InputMask to "##:##:##"
In VALID event of the TextBox:
RETURN VAL(LEFT(this.Value,2)) < 24 .AND.;
VAL(SUBSTR(this.Value,4,2)) < 60 .AND.;
VAL(RIGHT(this.Value,2)) < 60
Against Stupidity the Gods themselves Contend in Vain - Johann Christoph Friedrich von Schiller
The only thing normal about database guys is their tables.