Add picture located in same workbook to background of XY Scatter Chart

I need help adding a picture to the background of an XY Scatter Chart.
I was able to add the picture by referencing a .jpg file, but I am
sending this out to ppl who won't have the .jpg file. Instead I would
like to store and reference the picture in a worksheet in the same
workbook as the chart. Any ideas?

Here is the code I have been using to get the picture from a file.
ActiveChart.PlotArea.Select
Selection.Fill.UserPicture PictureFile:="C:\My Documents\Picture.jpg"

Thanks for the help

aj