WNA... there should be no adverts with an invisionboard mate.
I've just had a quick look-see at your site & you have a great big banner add slapped in your forum.
If this was part of a deal for you to have IPB set up for you, cool.
If not, are you sure you
have to have the ad?
http://www.stusplace.co.uk has an IPB forum with *NO* adds whatsoever.