You can access your exchange e-mail accounts using a browser. You should note that the best support for OWA (Outlook Web Access) is obtained using IE as some features are not supported in other browsers. More details about browser support can be found at can be obtained for here. Your access is by going to the URL:-
http://exchange.yourdomain
At that page, you will be presented with two edit boxes as shown below. In the first box enter your fulll e-mail address, eg "WebInformation@mydomain.co.uk". In the second box type your password and click "OK".