Suretrak - Weekdays and Weekend days Count

I am creating a project schedule with SureTrak,
The following is the issue,
Any help will be appreciated. Thank you.

I want to count weekdays and weekends.
For one item, I put in Start_Date 01/28/03 and 62 days to complete.
End_Date is suppose to be 03/31/03, but SureTrak is giving me
End_Date as 04/23/2003. Is there any way I can count all days,
both weekdays and weekends, and put in End_Date as 03/31/03
on the screen, as calculated.