Hey guys I have a HP Pavilion ze5500. I recently changed my hard drive and installed a fresh copy of windows XP. However, I am unable to install or use my internal wireless card. I have tried a lot of different websites and downloaded different drivers but still at no luck. Please please help me figure out what the problem is and how could it be solved. Thank you!

Did you try HP's website? They appear to have Broadcom WLAN network adapter drivers for XP in their support section for the various HP Pavilion ze5500 model product codes.

Do you have the Recovery disks? If so you should have used them to restore, not a fresh XP, but yes, HP's site should have the drivers.