I've noticed when i changed to this theme, my tables (a big picture in the middle and below a 3x2 table with pictures in them) have changed into the borders being black and the inside being white and making it a little bigger as well. It being bigger, it expands my page and it doesn't fit into the layout.

Now, in the theme options there is a table page, is that what i edit to change all my tables in the posts? I'm not sure what kind of code i need to put in there, i just want a black border around the images and it being only a thin line (smallest if possible).

This is what i have always used in the post itself:

<center>
<table bgcolor="#000000" border="1">
<tr>
<td bgcolor="#000000"><a href="" rel="lightbox[dbz]" title=""><img src="" height="290" width="600"></a></td>
</tr>
</table>
</center>
<table bgcolor="#000000" border="1">
<tr>
<td bgcolor="#000000"><a href="" rel="lightbox[]" title=""><img src="" height="160" width="270"></a></td>
<td bgcolor="#000000"><a href="" rel="lightbox[]" title=""><img src="" height="160" width="270"></a></td>
<td bgcolor="#000000"><a href="" rel="lightbox[]" title=""><img src="" height="160" width="270"></a></td>
</tr>
<tr>
<td bgcolor="#000000"><a href="" rel="lightbox[]" title=""><img src="" height="160" width="270"></a></td>
<td bgcolor="#000000"><a href="" rel="lightbox[]" title=""><img src="" height="160" width="270"></a></td>
<td bgcolor="#000000"><a href="" rel="lightbox[]" title=""><img src="" height="160" width="270"></a></td>
</tr>
</table>

Now, what code should i put in the table style and what should i put in the post itself?
Also, will i need to edit all my previous posts with the tables so that they will fit?

I'm sorry, i've always been new to this (not to mention i took the html from above from a page a long time ago heh) Also, the

rel="lightbox[]"

is a wordpress image addon.

The "tables" section in the theme options is just for styling. All the actual table markup would have to go into the post. You can add inline styling to the table too, as you already did, that would overwrite any global "tables inside posts" styling that you applied through the theme options section "tables"