Template width

Is it possible to widen the template by about 1.5cm because I have an iframe that I want to display that its width makes it need scroll bars which I want to avoid to keep the design right?
Thanks

So sorry matt
it's possible but that would need lot of code changes on the template layout codes as we're using a fix width grid system and changing the base width will effect all grid calculation.

What about increase the content pane width is that possible?

it's the same case...as it's width should follows the template grid system Matt. Sorry.