To place an order via www.computers4-u.co.uk select the product you wish to purchase (using the navigation menu on the left side of the screen to locate your product) then simply click on the 'Buy' button - this will then add the product to your shopping basket.
Once you have finished selecting the products you wish to buy, click on the "Checkout" button. You will then be taken through the purchase process automatically.
There are four stages to the checkout process; you will see an indicator bar on the the page advising you at what stage you are at.