set hours to 24
ltDateTime = datetime(2012,08,06,13,33,58)
ltDateTimeNow = DateTime()
lnNumHours = 2
if ltDateTimeNow - ltDateTime = (lnNumHours *60*60) **Take Hours Multiple by Minutes in an hour, and seconds in a minute)
<do your code>
endif
***
Not sure if this is what you looking...