SOLUTION:
Thank you Jack for posting that JavaScript.
File To Edit: forum_posts.asp
Do a search for "<!-- Message Body" (around line 754)
Insert the following line above it:
strMessage=Replace(strMessage,"<img ", "<img onLoad=" & Chr(34) & "makeFit(this, 600, 600)" & Chr(34))
Then add to the top of the page:
<script language="JavaScript">
//-------------------------SCRIPT------------------------
//Make graphic fit in to specified space
function makeFit(theImg, maxW, maxH){
var oldH, oldW, chngH, chngH
oldH = theImg.height;
oldW = theImg.width;
chngW = oldW/maxW;
chngH = oldH/maxH;
if (maxW < theImg.width) {
if(chngW > chngH) {
theImg.width = maxW;
}
else if(chngH > chngW){
theImg.height = maxH;
}
else {
theImg.width = maxW;
}
}
}
//-->
//-------------------------------------------------
</script>
This will limit the width + height of images to 600x600 pixels in the forum threads to prevent the table size from expanding. Modify the (this, 600,600) to set your own max amounts.