Hi Bruco,
Welcome to this Microsoft Project newsgroup
Tools/Options.../View tab - select a date format that shows times. You can
then enter dates and times. However, I hope you're not trying to enter
these in task start and finish dates - let Project sort out the dates from
your input of Durations and the logic precedence links. Otherwise, you will
set constraints that will reduce the flexibility of your project.
FAQs, companion products and other useful Project information can be seen at
this web address: <
http://www.mvps.org/project/>
Hope this helps - please let us know how you get on
Mike Glen
MS Project MVP