I installed xp on compaq cq61-415EI but wirel

I have the above named laptop on which I installed Windows XP Pro. My problem is that I have installed all drivers successfully except the network controller which I am unable to find since the laptop did not come with drivers and was intended for Windows Vista. Since I prefer XP, thats what I have installed but I cant get the wireless to work. Please advise on where I can get the correct network controller that will work with XP on the CQ61-415EI and whether this will resolve the wireless problem.

Please help me, I need to use wireless on this laptop to access home wireless internet.