It's probably something simple but, Arggg ... Help please

[Oz_gal]

OK, so i have been trying my hand at customizing my forums and I've run into a slight, albeit intensely frustrating problem, (one I'm sure and hoping, many of you would be able to fix in a second). I'm relatively new to all this coding stuff and i don't know how to align everything properly. There seems to be a major discrepancy in the alignment of my forums on different computers. On my computer its perfect, yet on 2 of my family members computers it all haywire. (to wide)
Can anyone help me please

here is a link to my forums; www.nannysociety.com/forums


I've se the main table width as 100%

[napy8gen]

class .header is missing. I think it could control the whole layout.
you can defined it back in the style main css.
style manager> style name> main css> additional css definition>

put in there

.header{width:1260px;}

this the same width as pageheader class.

so in the common templates you can make it aligned center.
style manager> style name> common templates>header>
<!-- logo -->
<a name="top"></a>
<div class="header" align="center">

All of this assuming that your first class header wrap everything up