hi Dan
the countif function has the following structure:
=countif(range to check for the criteria, criteria)
so in this case
we're looking in A1:A7 for any numbers greater than (>) zero
if you want it to include zeros, change the criteria to ">="&0
the sumif function is very similar to the countif function (has the same
first two arguments, but can have a third as well, which tells excel what
range to add up ... as you wanted to add up the same range that met the
criteria, i omitted it in the example i sent you.
hope this helps
Cheers
JulieD