Wireless Networking using Intel PRO/Wireless 3945ABG, Netgear WG111v3 802.11g Adapter [realtek RTL8187B]

As written in this post I had set up Wireless network at my daughter's home. We had a guest who wanted to use the router to check his mail. I went into the router configuration, disabled MAC Filter temporarily so that he could connect and I could get the MAC address of his Laptop in the router. I added the MAC address to the filter and enabled it again.

Later on I requested him to give his Laptop to me for a few minutes.I inserted Ubuntu 8.10 Intrepid Ibex Live CD in the machine and started Live session. I wanted to set up the wireless access through the Network Manager. The network card was Intel PRO/Wireless 3945ABG which was detected and configured as wlan0, but the Network was not available. I followed the following procedure to make it work:
Right click on Network Manager Icon
Click on Edit Connections
Click on Wireless Tab
Click on Add button
Enter SSID: Default
Put checkmark on System settings
Click on OK.

The Network Manager will say:
Connection Established

The guest was also carrying an old Laptop and Netgear WG111v3 802.11g Adapter [realtek RTL8187B] (USB). I decided to check it on the Desktop which had wired network. The adoptor was also detected and set up as wlan0 upon insertion in the USB slot. I had to apply the same procedure to make it work.

This was my first experience of setting up wireless on Ubuntu.