I need to learn I can put data values into EXCEL and get it to make a
graph. I have tried several days without getting results.

Is there somebody who can give me a little exemple on how to do it?

Thanks

Wouldn't it be simpler to output a text file with comma separated
values and then manually read these into Excel ?  

DDE also looks to be somewhat simpler if you actually need to
poke the data in directly.