Need a fix/help for wordpress business directory plugin

Hello all,

I have been putting together a wordpress site which requires a business directory. I found a suitable plugin buthave now run into a problem that I cannot seem to solve. For the right perosn this will probably be a 5 minute job, all that i need is for someone to show me how to adjust the width of the directory listings as currently it seems to only come up at 100% and there is not alot of support material out there for the plugin in question.

This is the site that i got the plug in from :
http://businessdirectory.squarecompass.com/documentation/installation/

And this is the page that the plug in is being used on:
http://trust-local.co.uk/?page_id=6

as you can see, the directory is filling the whoel width of the pge and is thereby pushing the other widgets that i have on page, to the bottom of the page - so the whoel layout is compremised. As i mentioned before, all that i need is for someone to edit the plugin settings so that the listings fit into the box of the left of the screen so that the rest of the layout is as it shoudl be and not pushed to the bottom. For the right person this will be a very very quick job.

Many Thanks,
James