please help me tidy my header area

[iain sherriff]

If you look at http://www.uklows.com/forum/index.php
you can see that the rotating banner repeats at the right hand side.
My banners are all 800 wide (forum used to be fixed width). Forum is now set to 90% width so I want to alter the userinfo div to be a flexible width......... sounds easy but I dont know enough to know if that is possible?
this is the present div coding

Code Select Expand

#userinfo {
font-size: 11px;
color: #fff;
float: right;
padding: 25px 20px;
text-align: left;
}

Can I chenge this to do what I want ?

thanks in advance