(adsbygoogle = window.adsbygoogle || []).push({}); How to do this in Mathematica??

Hi - I am an engineering student who is quite new to Mathematica (v. 6) but I really enjoy it. Lots of examples, easy to just play and figure out how to do something for yourself. Makes beautiful output. However, I have not been able to figure this out...

I am using another program (COMSOL) which will export values from a graph as a text file - eg "Data.txt". I use list1 = ReadList["where_the_file_is_located/Data.txt", {Number, Number}] to read the date into a list. Then I use ListPlot[{list1}, PlotRange -> {0, as_big_as_I_need}] and it plots very nicely.

However, I cannot figure out how to manipulate individual members in my list (i.e. multiply all the x-values [the first "Number"] by something. How can I manipulate all the first or the second "Number(s)" in a list like this?

Thanks!

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# How to do this in Mathematica?

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