Gateway DX-4200 windows xp drivers

Hello,

I purchased Gateway DX-4200 while ago. It came with windows vista. The computer was getting slower and slower and I decided to get rid of vista.

I installed windows XP. Then, I found some of the missing drivers via google. However, I still have missing drivers. Please check the following picture for missing drivers. http://screencast.com/t/ZTRhYTRhM

I also attached everest report. Right now, its wireless card and some of usb ports are not working. The computer doesn't recognize my sansa mp3 player which connects through usb port.

I am looking for drivers. It would be great if you can guide me in solving the issue.

Thanks for your interest and help beforehand.