keep record of sensor

Hello (again and again)
I want to say that it is a very nice forum - very helpful and very nice people here.
As you can see I'm new so I have many questions.

my question is:
I have a sensor that working and do refresh so I can see it's status "live"
now I want to keep record of the status (like log file....) , but also keep seeing the current status
something like this
refresh number : i
sensor is Open/close (this part I all ready have )

history
close (according to the refresh number-- i+12)
close(i+34)
.
.
.
.
.
.
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is it possible to do?

Thanks again,

Is this in any way related to this thread?

http://arduino.cc/forum/index.php/topic,103606

I think so, so I will lock this thread.