Diver, here is what I do.
I downloaded a screen shot capturing software called clip 2 net.  I use this to take a snap shot of the graph and safe it on my computer.
Then I go to a photo hosting web site call photobucket.com.  I upload the picture there from my computer into photobucket.
Once there, there is a box with a link in it.  click on that bottom box and it copies the link to your clipboard.  Navigate to this site, click on reply to topic, put your cursor in the box, ctrl-V to paste and whalla, you have now placed your piture into this message.
A little playing around and it becomes really easy
Hope this helps

PS, I am an accountant and I hated excel 2010 to in the beginning, but wow it is powerful and easy to use after you get used to it.  Try minimizing the ribbon and then customize the quick access bar.  It looks like the older versions of excel shown below
