here's what i have:
a group of rows i like to call the Agroup, Bgroup,, etc, up the Ogroup.
So there is 15 groups of rows.
Each group has 20 rows in them.
The Agroup starts at row25, and ends at row44, where the next group picks
up, and so on.

Here's what i want:
Since i'm not using the cells before A25,
i want A1 to represent how many rows to unhide in the Agroup
A2 to represent how many rows to unhide in the Bgroup,
and so on, up to A15 to represent how many hows to unhide in the Ogroup.

For example: if i type "3" in A1,
STEP1: right away,this would tell excel to unhide the first 3 rows in the
Agroup (A25, A26, A27) if they aren't already.
STEP2: Hide the rest of the rows in the Agroup. (row28 through row43)
then if i type "4" in A2,
excel repeats the same steps. (unhide the first 4 rows in the Bgroup A45 -
A49)
and HIDE the rest of the Agroup (A50 through A64)

The sheet could start off with all rows hidden, or visible, whichever is
easier.
(Preferably i'd like the code to work under either condition)

ANY kind of help would be GREATLY appreciated
and if you can explain what your formula/script does, so i understand.
thanks in advance