Thanks for your suggestion but unfortunatly it didn't work.
I think with Easy Catalog you have to paginate onto master text frames so when setting the original document up I checked the 'master text frame' box. The 2 pages I have create are both set as masters and I have added the threaded text frames. It paginates into these absolutly fine but the problem arises when it needs to create another page.
Someone please help, I dont want to have to pay for a new moniter and office window, lol.