I came up with the Sinclairs but I didn't know about the Jacksons.
Based on the information given it could be either one.
I'm probably not the best person to explain how to post scans but I'll give it a try....
All images have to be hosted online somewhere. A lot of people here use photobucket.com -- it's free and easy to use.
Once the image is online you just need to right click and get the image information. Copy that and paste it into your text.
It will look something like this: *http://nationalpostnews.files.wordpress.com/2013/01/gas-field.jpg (without the asterisks).
Then you highlight the link and click on the "Img" button above and it ends up looking like this