does not have a built-in wireless then you have to change the whole motherboard which means technically changing your laptop to have something like that.

You can buy the Linksys wireless NIC which comes as a USB to be attached to your laptop, or go with the Wireless card that you will insert into your laptop and that is a D-Link but check first if you have that PCMCIA port there ...

Good Luck ...

Do not dwell in the past, do not dream of the future, concentrate the mind on the present moment. (Gautama Buddha)