fyi, if you have any trouble uploading a chart, this 'screen capture' SnagIt software is a free download (for 30 days) and is really easy to use. you can capture anything on your screen with it and it saves it as a relatively small file:
SnagIt - Reviews and free SnagIt downloads at Download.com
use the 'manage attachments' button to upload a screenshot to your post. you can post it INSIDE the message like here if you make 1 adjustment.
after 'uploading' the file to the google server through the 'manage attachments' button. right-click on your mouse while over the filename in the 'current attachments' section of the 'manage attachments' window. then click 'copy shortcut'. paste this 'copy shortcut' into the box that pops up after clicking on the little 'picture' button on the toolbar of this thread as shown above.
this is not hard but maybe a little tricky to explain in writing.