hyip lister monitor button IMAGE enable (other than default)

Hi, We purchased an HYIP Monitor script named "hyip lister pro" from the vendor who is not answering our support request in a timely manner. We were not provided with the location of where to put the monitor image. It is one of the last things that needs to be done. We have failed at all of our own attempts and are behind on this project. We don't need the image designed, we're only having a hard time figuring out what folder it belongs in. We have not been able to determine this from the code. It is important that it is the true and proper monitor button image name so that the script will superimpose the listing's statistics upon it. If this is incorrect, it will not properly work across the site and when the code is posted on 3rd party sites. For an experienced person, this should require little time.