cahva - I forgot to say that I've tried logging in as the new user and it doesn't work! Also, I've already visited that link and followed the steps but it's still not working.
laserlight - I'm thinking I might have to just re-install! How annoying!
By the way, I've been using apache2triad - I realise this is the easy way around and I'm sure you both think it's a bad idea, but do you know of any other decent WAMP solutions? Alternatively, if I remove this an go ahead and install the latest versions of php and mysql, do you know of any good resources for info on how to configure the two?