Add an advert slot to my site

Hi

Need someone to code me another advertisement banner slot on my phpbb3 forum and on my wordpress site. You can see what my site currently looks like here - http://www.trailscotland.co.uk/forums/index.php. I would like the new banner slot to sit in the right background like this - http://i59.tinypic.com/2e3sxo2.jpg

Please note - I don't want you to design me a banner I just want you to code me a slot so I can insert my own banner.

Need this done asap.

Thanks