Using a custom field within an excerpt... or trying to

Hi

I am moving a large blog site over to Atahaulpa as part of a re-design.

The old site theme uses a custom field (image) within the excerpt. I presume it is part of the theme

old site

new site


My question is where ( using ATO ) can I put my code to achieve the same result

i.e

"get the custom field(image)", "echo the excerpt text", "display the (styled in ATO excerpts) Read More"


Is what I thought might work to get the image -

is this correct ?

where should I be putting it ?


One last thing - the excerpt text is written by the author for each post and entered via the dashboard (it is not a generated snippet)


Thanks in advance