I have made a simple forum, but when someone enters text like:
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
The table streches, is there anyway i can stop this, also when some starts a new line (presses enter) when its displayed it ignores the new line.

Ok,

1. for your table you need to add some style to it. Say your table is called 'main-table' :

<style type="text/css">
.main-table { table-layout: fixed; }
</style>

2. When a new message is posted, in your programming language used, replace '\n' with '<br>'


should work.

If your using PHP you can use the nl2br() function to change the \n to br.

PHP Code:

$body = nl2br($body); 


I get this

http://tinypic.com/e9u24k.jpg

My html is

<table bgcolor="#000000" cellspacing="1" cellpadding="5" width="80%" style="table-layout:fixed">
<tr bgcolor="#bdd8fe">
<td colspan="2">
test
</td>
</tr>
<tr bgcolor="#ffffff">
<td width="100" align="center">
<img src="images/avatars/tim.gif">
<br>
<a href="profile.php?username=Tim"><font color="blue"><strong>Tim</strong></font></a>
<br>
Posts: 103
</td>
<td valign="top">
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaa
</td>
</tr>
...

Will you ever actually have text in there that does not have a space in it? The lack of spaces is causing the run-out. To scroll the content or chop it, repectively, try setting the TD's style to "overflow: scroll" or "overflow: hidden"

Or just make the table width to be automatic, so the page with scroll to the size of the content.

Most non-breaking strings of text that long will break a site, but it looks like this forum puts a space in automatically. You could code that as well.