To configure the router you need to go to its web interface.
Firstly, obtain the IP address of the router:
Click Start, Run, type "cmd" and hit enter - this will open up a DOS screen
Type in "ipconfig /all" and hit enter - it will show all the IP addresses.
Look for "default gateway" under the wireless network card and note down the IP address. It could be something like 192.168.1.254.
Type in the IP address you jotted down in to Internet Explorer - it will prompt you for a username and password - you should have this on a sticker on your router or manual. You then basically need to change the encryption type from WEP to WPA.
Hope this helps.
Sanjay from tailorworld.co.uk