Greetings, all

In MatLab I can control a for-loop by specifying the length of a vector as 
the number of times, e.g.

for I = 1:length(vector)
     for J = 2:(length(vector)-1)
.
.
.
    end
end


Now I am in Excel, and I want the for-loop to be run as many times as the 
length of a column of entries starting in a specific cell (e.g. Cells(10, 
1)) and ending in the last active cell in that column. This way, if the 
number of inputs change, I won't have to redesign the code. Unfortunately, 
the statement

For I = 1 to Length 'where Length is the number of active rows in the column
.
.
.Next

doesn't work.

So, my two questions are:

1. How do I count the number of active cells in a column below a cell of my 
choice?
2. How do I use this VB variable (not visible on the spread sheet) to 
control the number of times the loop has to run?

Thanks
 

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