>clock in at 9:30am and clock out at 11:00am this calulate to 1.70, looking for 1.30, is this not what the form is for to asks questions.
>

Convert them to Date/Time (if they aren't already), then subtract them and convert back into hours:

ex.

ltStart = DATETIME(2008, 11, 28, 9, 30, 00)
ltEnd = DATETIME(2008, 11, 28, 11, 0, 00)
?(ltEnd - ltStart) / 60 / 60