Example Chronicles theme.
Look in your
tables.html file
Code:
function OpenTable() {
global $bgcolor1, $bgcolor2;
echo "<table width=\"100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"7\">
<tr>
<td><table width=\"100%\" border=\"0\" cellpadding=\"2\" cellspacing=\"0\" bgcolor=\"5B0B0B\">
<tr>
<td><table width=\"100%\" border=\"0\" cellpadding=\"1\" cellspacing=\"0\" bgcolor=\"000000\">
<tr>
<td><table width=\"100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">
<tr>
<td bgcolor=\"#BA9F70\" background=\"themes/Chronicles/images/gen_background.jpg\"><table width=\"100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"4\">
<tr>
<td>";
notice the background image being set in one of the table rows there?
Try that same method at the same spot on your tables.html file.
mikem