CSS width help

[xxll_martin_llxx]

Hey clever people,

Just after a little bit of help...

On my site here where the middle section is the gap between the navigation area and the middle section is quite small (I've done that and that's how I want it..) but I can't seem to find the CSS to make it longer width ways or make the gap between the middle section and the right hand side sidebar.

I think it has something to do with this part of CSS??

.content1 {float: left; width: 428px; margin: 0px; padding: 0px 0px 0px 10px; color: rgb(0,0,0);}
.content1-container {clear: both; float: left; width: 408px; margin: 0px 0px 0px 0px; padding: 0px;}
.content1-container-1col {overflow: hidden; width: 408px; margin: 0px; padding: 0px;}

 <!-- 	CONTENT -->
<div class="content1">

<!-- Page title -->		
<div class="content1-pagetitle">Welcome to the Red Blue Army, Online</div>			
                				
<!-- Text container -->
<div class="content1-container line-box">
<div class="content1-container-1col">
<div class="content-welcometxtbox-shade">
<p>
Thank you for visiting the Red Blue Army's website. The RBA is a group of fans who aim to add 

colour and atmosphere at the matches of Aldershot Town. For more information about us please 

visit the '<a href="/about.php">About the RBA</a>' page. 
</p>
</div>
</div>
</div>

Which one do I gotta change??
Cheers