Okay, i have solved my previous problem but now i have another problem. My wireless network disconnects after 5 - 10 seconds when i am connected to access point. Even sometimes after i try to connect to it, wireless network just disconnects straight away.
change the Channel on the Wireless Card, any number from 1 to 10, most users will use 8 or 9
Also you can do the same on the Router but make sure you take a note of the settings as if it does not like the new settings it might kick you off the internet and you might have to hit the Re-set button on the back of the router.