Thanks for your help Bill, Im in NZ too!!!
Unfortunatly your formula did not work. It doesnt show up as invalid but
just turns up a blank(not a zero even) in the C column.....Help!!!
From your first reply
it looked like you want a 0 result if not >=2.
This can be done with =IF(B2-A2>=2,1,0)
With copy down I indicated that you can extend the formula down the column.
Use the right hand bottom corner of C2 cell
The mouse pointer changes to a black "+" sign
hold and drag down
You can then add the results in that column.