Where can I get (preferably freeware) software that monitors how much
data I have downloaded / uploaded in kb (not in packets) as my DSL
package includes 5GB of data a month and I would like to find
something that I can run on all my computers to make sure I don't go
flying past my quota each month!  Thanx.

Dear whizzzz-ga,

So you are looking for a monitoring software.. cool... I've the answer
for this. I personally use a software called as "Netstat Live" from
AnalogX. It has all the features you are looking for along with many
others good features. You can download this software from this site
http://www.analogx.com/contents/download/network/nsl.htm

In addition to the above software, there is another one called as
“DuMeter”. It has a 30-day evaluation and after that, you can pay
$19.95 to get it registered.
http://www.hageltech.com/dumeter/


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I hope this helps. If you’ve any question, please ask for
clarification.

Regards
netcrazy