Help please

Hello,

I have set my blog into a folder called /wordpress/ and I have followed the instructions to have it as my homepage, and that works fine.

However, when I try and click on a link I get this error.

“Forbidden

You don’t have permission to access /wordpress/ on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.
Apache/2 Server at exoflux.co.uk Port 80″

What should the permissions for the wordpress folder be? What should I change?

Thankyou in advance.