BACKGROUND OF THE INVENTION
 The present invention relates to a client-server system, and more particularly to a way of downloading content between a client and a server.
 A client-server system comprises a client terminal and a remote server. In the context of the present invention a client terminal consists in a portable radio communication device such as a mobile phone operating in a communications network. The server is located remotely from the client and is connected with the network. The client terminal and the server in the context of the present invention operate to transfer content and data between one another over the air by means of an air interface.
SUMMARY OF THE INVENTION
 Against this background and in one aspect, the present inventions provides a client-server system as set out in claim 1.
 By means of the invention, an end user can obtain new secure content for use on his/her terminal from a server quickly, efficiently, and with minimal user input. That is to say, the user is able to download content from a server to his/her terminal without having to carry out a large number of steps on his terminal (such as key depressions) in order to do so.
 In a specific example, a WAP enabled user terminal (e.g. mobile phone) has stored on a memory thereof an electronic game which the user can play by means of the phone's Games menu software and user interface (e.g. LCD, keys, etc). After a number of plays, the user may wish to have on his/her phone a new (or modified) version of the game (e.g. new level), which new version is available for downloading from a server of the games provider. Accordingly, in a specific arrangement of the present invention, there is provided, as a selectable option embedded in the Games sub-menu, a direct games services link, which the user can select to effect connection to the server. This directly activates, via the phone's WAP browser, a transmission from the mobile phone to the Games server comprising a request for a new games download. This request is received at the server, processed by the server and then if appropriate the requested games download is transmitted by the server via the network to the user's terminal. At the terminal, the new game's download is received, processed and stored on the phone's memory as the default version of that particular game. The whole process advantageously is automatic: the user is required only to initiate the request for the new game's download using the direct games services link in the Games sub-menu, and the remaining steps of contacting the games server, downloading, and storing and setting the new games download as default is accomplished without the user having to perform a great many further operations. Hence, in so far as the user is concerned the whole process of obtaining games downloads level is a seamless one.
 In this Games download example, the advantages are achieved by the provision primarily of a combination in the mobile phone of a direct games services link in the Games sub-menu and a secure games download authentica
tion means. Because of the direct games services link, the user does not need directly to navigate to and open the mobile phone's WAP browser, and because of the download authentication means, the phone carries out security checks on the games download received from server and if recognised as the coming from a secure source is saved directly in the mobile phone memory as the default version of the game.
 The present invention is not limited, in respect of the requesting, downloading and security functionality, to just Games Services, but applies more generally to all forms of multi-media applications services such as music and images.
 Other aspects and features of the invention are defined in the appended claims.
BRIEF DESCRIPTION OF THE DRAWINGS
 In order to aid a better understanding of the present invention, an embodiment of the invention will now be described. This should not be construed as limiting the invention, but merely as an example of a specific way of putting the invention into effect. In particular, the invention will be described with reference to the accompanying drawings in which:
 FIG. 1 is a schematic of client-server system in accordance with a preferred arrangement of the present invention;
 FIG. 2 is a block diagram illustrating selected functional aspects of the client server system of FIG. 2;
 FIGS. 3A and B illustrate is a flow chart outlining a preferred way of effecting downloading of content in the client-server system of FIGS. 1 and 2,
 FIG. 4 is a hierarchy illustrating a server side download structure;
 FIG. 5 is a hierarchy illustrating a games data file structure; and
 FIG. 6 is a game data file structure.
DETAILED DESCRIPTION OF THE
 FIG. 1 outlines three entities of the present invention, namely a server 21 that holds content for downloading, an end user's mobile phone 31 that is able to download the content, and an operator network 41 that provides a telecommunications service to the mobile phone 31. The server 21 has a unique URL address and using this can be accessed by the end user through the mobile phone 31 which may be WAP or iMODE enabled.
 As indicated previously, electronic games software is one example of content for a mobile phone platform, and in the following example reference will be made to mobile gaming and games content, although the invention is in no way intended to be limited to mobile gaming and games content.
 Mobile gaming is a term used to refer to all aspects of electronic games in the context of mobile communications. It is not uncommon nowadays for mobile phones to have, pre-loaded on a memory of the phone, content relating