hi gurus(geeks)...   i want to compare two date fields.... i.e:  i have taken a date filed as from _date, and  to _date fields ... N issue is   to date should accept  >=3 of from date..  i tried using formula field....not succeeded...   need help!!!!!

hi gurus(geeks)...   i want to compare two date fields.... i.e:  i have taken a date filed as from _date, and  to _date fields ... N issue is   to date should accept  >=3 of from date..  i tried using formula field....not succeeded...   need help!!!!!