As HP seems to don't reveal more details about their PCI Express Wireless Lan Card, we should try to figure out first which card you've got.
I'd suggest you to retrieve some unique identifiers : The
Product ID and the
Vendor ID stored inside your device's read only memory.
You have to follow these steps under Windows XP :
- Open the
Start Menu, right click on
My Computer, then click on
- A new window will open up, choose
Device Manager on the left pane of that window.
You should see a list of every devices you have inside your machine, find an Unknown Device with a big yellow Question Mark, with the name of
Network Controller :
Right-click on it, click on
Go to the
Details tab, and choose
Device Instance Id inside the combo box, just under the Network Controller title.
Now you can see
VEN_ followed by your
Vendor ID and
DEV_ followed by your
All you have to do is telling me these identifiers by writing a comment for this question, or you can also try to search "ProductID XXXX VendorID YYYY" on Google to find at least your Wireless LAN Card model, then you will have more luck into finding a working 64 bits version for Windows XP.
Hope this helps !