seems to me that you want to construct a histogram. I believe Excel has
a built in histogram routine.

If your numbers are in column A ( say A1:A100 )then =MODE(A1:A100) will give
you the most common number.

Expanding on my original reply...

You need to first load the analysis toolpack by going to tools / Add-ins
and selecting "Analysis Toolpack"

Then you need to follow instructions under Tools | Data Analysis |
Histogram.

Before it will generate the histogram, you need to indicate the size of
the bins into which the data tallies are to be placed.  For example, a
table showing 100, 1000, 10000 would have three bins, for number of
occurances of under 100, for number of occurances over 100 by under 1000
, and so on.

That all worked greast, done exactly what i needed.

thanks
Brad