Hi jazzman

It is possible however you would need to edit some of the template images. Firstly add the following to the Custom CSS field of your templates parameters...

[code type=css].wrapper960 {width: 1160px;}[/code]
Where 1160px is your new template width, that's the easy bit (",)... you must then adjust some of the template images to match that of your new template width...

http://demo.joomla51.com/0072/templates/j51_oxygen/images/hornav.png
http://demo.joomla51.com/0072/templates/j51_oxygen/images/content_bg.png
http://demo.joomla51.com/0072/templates/j51_oxygen/images/base_bg.png

Some other minor alterations might also need to be made to the CSS.

Ciarán

Hi ciaran,
Thank you so much for the help. I am almost 90% of the way there. I added in the custom css and adjusted the images to match the new width. It looks great.
The problem now is that the main content component is not scaling to fit the new width. See my site http://www.simarveer.com to see the issue. I have sidecol-a and sidecol-b both enabled, but the component in the middle does not cover the entire space allocated to it. Can you help with this please? I looked at all the css files but could not figure out what to change.
Thanks.

Try also adding the following to your Custom CSS field...

[code type=css]#content_remainder {width: 680px;}[/code]
Ciarán

Hi Ciaran, thanks again. It looks great now.
Is there any way to anchor the search box to the right end of the hornav? Right now it's almost in the middle.

Ciaran,
I added the following to the custom css and it worked. The search box is now anchored to the right of the hornav
#search {
top:150px;
left:900px;
}
Hope I did it right...

Perfect

Ciarán