you dont have to pay anyone, it should be pretty easy for us to tell you.
have a look at the index.php page in your theme. it sounds like there's probably a line there that says something like
the_excerpt()
thats the bit that prints out the words for each post.
paste the code either side of it here, so we can see what it says (straight from the php file, not the source code).
/edit/
actually... it would be easier if you just try this...
uninstall the plugin that is supposed to print the image.
and then open up the functions.php file in your theme's directory.
paste this into it...
function post_image(){$a=1;global $b;$b=1;$c=get_permalink();$d=get_the_content();
$e=substr_count($d,'<img');$f=0;for($i=1;$i<=$e;$i++){$g=strpos($d,'<img',$f);
$h=substr($d,$g);$j=strpos($h,'>');$k=substr($h,0,$j+1);
$k=preg_replace('/width="([0-9]*)" height="([0-9]*)"/','',$k);$l[$i]=$k;$f=$j+1;}
if(stristr($l[$a],'<img')){echo'<a href="'.$c.'">'.$l[$a]."</a>";}$b=0;}
and then open up the index.php page in your theme's directory, and paste this where you want the image to appear -- probably somewhere near where it says
the_excerpt()
<?php post_image(); ?>
and then it should work