I am installing windows XP on my sisters laptop which is a dell inspiron 6400 (2 years younger than mine but in a sh1t state with a cracked screen, broken keyboard and tipex on the bottom).
It originally had windows vista but you get fed up reassuring you computer that you own it and it is ok to change the hard drives properties so that the word document can be saved

, but i have plugged it into the back of the tv as a display and using a windows xp disk i put it on and wiped all the old rubbish and put XP on, it was SP1 so on another disk i had burned i installed SP2, and then SP3. Then i installed the various drivers off the dell website.
The problem is that the internal wifi isn't working, i am using a usb dongle at the moment for the wifi but i don't know what driver is needed for the wifi card inside:
