Ok, my data looks like this:

01/01/2013 00:00 12345.78
01/01/2013 01:00 98765.43

... and so on, for about 20.000 lines (is 3 years and a half of logging every hour, but I will can split it into years).

I want to plot this data in a chart with double X axis, one for the month and one of the week number.
I achieved something quite close with a line chart and the x-axis formatted for date, with units of one month, but then it plots a line for every day, while I want one for every hour.

Also, I don't know how to plot the week number on an extra axis.
I don't know anything about Visual Basic, so I would like if someone could explain me how to achieve that through the menus.

Thank you