another duration question

[#1]

hi all,

i want to implement (in a column of a table chart) the time (actually counting) passed since the date-time value of another field. Example:

My table has three colums:

Activity, Starttime, Running_Since

- Activitiy contains the description of an activity

- Starttime is the actual start date and time (e.g. 2011-06-13)

- Running_Since should display the time passed since Start counting upwards in format Days - Hrs - Minutes

Can anyone help ?

Thanks.

K