Weight and balance chart

Hi guys,

I have good of knowledge in computer networking, but I'm in need of something in excel that isn't an easy area for me.


I have a spreadsheet that does some airplane loading calc (weight and balance) and gives me the following data (for example):

Depature weight: 1900; Arm 2,38;

I need to plot the data as a DOT into a specific chart (weight and balance chart) that's found in the airplane manual (see link below).

http://img180.imageshack.us/img180/5503/grafic.jpg

Is it possible ? where should I start ? I saw some examples on the net, but it doesn't describe how to use an image. Can I use this image on background and put the chart limits over it using invisible color ? How do I tell excel to use diagonal lines ?

Any help will be really appreciated. I'm looking for some kind of tutorials. I have more 3 different charts that I need to do the same.

Thanks

Wazzie