display image with recent post or tag post plugin

Hi,

Is anyone able to give step by step instructions of how to include an image when using the recent posts or prefereably the site tags plugin with post indexer - I know it seems to be a pretty common request, but I can't seem to find a definitive answer for it... I have searched.

I know it may be fairly complex but I am positive that many people will be delighted to find out how to do this - as it seems to be a pretty common request.

thanks