something's wrong, my formulas doesn't appear completely in the post
first:
SUMPRODUCT((ThisWeek<TODOGX56<=NEXTWEEK)*(TYPEGX56="FAST")*(TODOGX56<>""))
second:
SUMPRODUCT((ThisWeek<TODOGX56, ToDoGX56<='NextWeek),(TYPEGX56="Fast"),(ToDoGX56<'>""))
Hope will work this time
depending what your named ranges are, you probably need to enforce arrays to be returned within your calculations using --(xxx) around each set of questions
see http://www.xldynamic.com/source/xld.SUMPRODUCT.html for detailed overview of Sumproduct
e.g. =SUMPRODUCT(--(ThisWeek < ToDoGX56), --(ToDoGX56 < =NextWeek),--(TYPEGX56="Fast"),--(ToDoGX56 < > ""))