An arrangement permitting a user for example in a internet point or using a different profile in the same machine can connect to a web server to download and install local client software such as a java application or a browser plug-in the first time he accesses to this service from that browser in order to customize his environment. Once authenticated, he can choose the personalization to be performed in whatever application installed and eligible to be user customizable. For example he can replicate in the system his browser settings (favorites, cookies, forms etc) or word templates as a clone of environment setting of his personal machine. The customization can depend on pre-defined profiles to allow the user customization of a subset of settings, for example only browser settings. Models of different operating environments are defined and called upon to enable interactions with different client devices.