Counting number of populated cells in a specific column

Hi,

I am sure this should be REALLY simple, but i just can't find the answer i'm looking for.

I have a sheet which changes daily in quantity of information.

I want some simple code which counts up the number of populated cells in column A and returns the answer to a cell in another worksheet - or just automatically use it to print that number of pages.

I think i should be able to do the printing side, but, currently have no idea how to count up the number of populated cells in the row.

If someones feeling very generous though, giving me the code for printing that number of pages too would save me some work (the worksheet which needs printing is different to the worksheet which needs the number of cells adding up.)

Thanks

Mike