Ahhhhhhhhhhhhhh

I've downloaded a portfolio plug in for the new WordPress site I am building (adapting a template) and it said I needed to change the perma link settings so that the url's were displayed as .co.uk/portfolio, .co.uk/about etc etc, I have done this and now none of the news/blog entries work, when you click on them they reload the home page and that's it. Can anyone help? My WordPress knowledge is extremely limited, I am learning it as I go along.

Fixed it, don't worry.