While WICD network Manager is an excellent choice for configuring wireless networking with allocation of an fixed IP address, this can be achieved manually in Linux by editing the relevant \etc\network\interfaces file as shown below.

After completing internet connectivity setup on Raspberry Pi, it's time to setup a fixed/static IP so we can access it easily over a network via SSH and VNC.

To get this done we will be using another popular, simple to use, graphical WiFi Network management Utility for Linux - WICD Network Manager. Just follow the steps below to install and configure an static IP on your Pi.